The real challenge!

You reach his hand with yours and press to your butt-hole.

"Now we will have an other challenge!" say you.

"Yeah? What's it?" asks Bob, still inside your ass.

"We will choose some dildo, maybe bottle, and will push it in our asses!" grin you.

"No way!" said Bob.

"Oh, yeah! Who will go deeper is a winner!"

"Fuck, OK" agrees Bob. "And what what's the prize?"

"Winner will fist loser..." grin you again.

"Fuck NO!"

"As hard as he wants." end you.

"Fuck you, dude! I'm not into this!"

"I'll let you select the dildo. You should start it now."

"Fuck, buddy!" Bob takes his hand out, causing you to moan again. "It's not fair."

Nevertheless Bob starts looking for something that can be used as dildo. Finally he finds an empty wine bottle, thin and long. He cleans it and gives to you.

"Go on, man!"

You put bottle on the floor and start pulling your ass on it. You barely feel the bottle-neck and start pulling yourself on the wider part of a bottle. You are well lubed with Bob's jizz and saliva, so you've stop only five inches from the bottom of the bottle, when you have felt that bottle-neck reached certain part of your bowels.

Bob records your achievement with pencil and smartphone. You take the bottle out. It is hard to keep yourself from pushing bottle inside again...

"I've even lubed it for you." smile you and give sperm-covered bottle to Bob.