I raise my left hand

I vote for the extra shot added since I want to see clothes come off sooner and I’m not sure the girls won’t start taking shots instead of removing clothes. I’ve already seen Ashley take a shot twice instead of taking something off. Only John votes for the other option.
Then I hear the girls coming down stairs and they are laughing. It doesn’t take long to see that they found two more girls to join the party as I see Lilly and Holly coming down the stairs with the girls. I then notice that Lilly and Holly are only in the panties and bras. Lilly is wearing a matching pair of black panties and a lacy black bra. Holly is wearing a white thong which clearly shows off her butt and a white cotton bra that shows off her cleavage very well. I notice the others guys are enjoying the view except for Brad who seems to be confused on how he should act with his sister coming down the stairs the way she is dressed.

Ashley: “We have two more girls to join the game and they only seem to have two items. We found them this way upstairs and thought they could join us for some fun and they thought so too.”

The look on Ashley’s face tells me that they caught them doing something that they don’t want getting out, at least not yet anyway. I sit down on the couch and wait for Missy to rejoin me again. The sitting arrangement is going to be a little different than before with not enough seats though I don’t really recall who was sitting with who before any way. Looking around at the three sofas and four chairs, I start to wonder where Holly and Lilly will seat as well as who is now going to sit with who. I sit down and notice Ashley and Brad each took a seat in a chair across from each other. I guess Brad is doing it so other couples can sit together, but I’m not sure why Ashley is going along with it. Daniel sits on a sofa with Crystal and Heather sits with Kelly on the sofa across from them. The chair next to Crystal is where John decides to sit back down and Greg takes the chair next to Heather. I’m sitting on the sofa between John and Greg waiting for Missy to rejoin me and wondering who Holly and Lilly will join.

Missy: "Alex, I’m going to sit with Kelly and Heather if that’s ok with you."

She doesn’t wait for me to answer though and sits right between Heather and Kelly for a snug fit. Though after the amount of drinks we’ve had, I’m not sure it bothers them. I don’t have to wonder where Holly and Lilly are going to sit now though as Holly pushes me over to the middle and they sit on both sides of me pressing their bodies into mine. My lack of clothes really becomes noticeable to me with their bare skin touching mine. I quickly cover groin with my hands over my boxers, but it seems to be a little too late as I notice both girls are looking at my groin with smiles. This is only making me more nervous as Brad is not sitting too far away and the other girl is my sister. I look back up when I hear Brad cough.

Brad: “Since the girls decided to add two more people, it seems a good time to let the girls know the guys came up with a change on the shot rule. Instead of one shot for not taking something off, it is now two shots. Unless anyone disagrees, we will start round nineteen.”

I don’t notice anyone object and the round starts. Holly and Lilly are dealt into this round even though it seems Brad wasn’t very happy with Lilly being part of the game. Any guy including myself will likely need to get a few shots into Brad if they want to do anything with Lilly. Though I’m not sure myself if I want to try something with Lilly and then there is my sister sitting next to me in just her underwear.
I do my best to win the round, but only keep from losing as Ashley is the winner with four seven’s and Lilly is the loser with a pair of two’s.

Ashley: “Lilly, I would rather you take the two shots, but if you don’t want to then take off you bra.”
Lilly: “I think I’ll take the two shots, though I may have already had a beer.”

Lilly giggles and as she gets up to get the shots, rubs her butt on my leg. She then takes two shots of tequila. She turns and grins as she comes back over to the sofa and just before she gets back she stumbles a little while sitting down and sits in my lap. I can feel my dick press against the fabric and rub between her cheeks. Lilly rubs against it before sliding off my lap and back into her spot next to me. I notice Brad doesn’t seem too happy, but I’m not sure if he is more mad at me or Ashley for having Lilly join us.
The next round the loser is Brad with a queen high card and I somehow end up winning with two pair. Now, I just need to figure out what to have Brad take off. I can try to get him to take the shots or give him something easy to do or take off.