A few, none of them good.

"Well since we're not dealing in money I suppose there's a few favors you could do for me in return for my mask." Tammy explained before adding. "And let's just say it's not a coincidence that you're cock is currently hanging over the negotiating table."

"Don't worry Tammy, the subtle hints that you've been dropping about wanting sexual favors haven't been lost on me."

"Glad to see we're on the same page big guy." The blond said with a little giggle before reminding you of her power in this situation by dragging her finger from the base of your shaft up to your exposed tip.

"Now before we start let me say that no matter what deal you choose you'll also have to go on a date with me this Friday."

You roll your eyes at the tacked on date. Tammy is really getting a deal out of this mask, she's lucky your ****. "Fine, now what's your offers?"

"First deal. For the mask you'll have to let me spank you."

"Spank me?!"

"Yup. Twenty times on each cheek, and you'll be counting."

"W-Why? What would you have to gain from this?"

Tammy dropped her cocky attitude a bit at that question. "Well, I uh... Kind of have a thing for watching guys get their butts paddled. It's a fetish of mine I guess. I've always wanted to try it out myself, and now I've got arguably the cutest boy in school right here butt naked — emphasis on the butt. So what do you think?"

You look at Tammy, a geeky girl near half your size, and imagine being taken over her knee. She's already proven that she's willing to take advantage of a situation, so it would be foolish to assume she'd hold anything back during a spanking. Which would mean you'd probably have to duck and dive through party guests with not only a stiffy but a bright red ass marked by Tammy's small handprints.
Even with a mask on it would still be beyond humiliating. Not to mention the fact that you're going to have to reveal your identity to Chris and Rebecca to get help. Loosing your fig leaf was bad enough, but if you show up with a bright red ass as well Chris may just laugh herself into a coma.

"Umm, I'd like to hear the other offers first."

"You really know how to crush a girl's dreams don't you Sam." Tammy sighed. "But fine. For my next deal I want some pictures with you. I'll make sure not to include anything above your chin in them, but your cock and butt are fair game. Oh and these photos will involve a lot of poses, touching, holding, and a little bit of me kissing you."

"Mind if I ask what those photos will be used for?"

"They're going to go up on my social media pages. It would make me the talk of the Women in STEM club meeting next week!" The nerdy blond explained with an excited light in her eyes. "If they open up Instagram and see me pressed up against you, my face resting on your pecks and my hand on your hard cock, they'd treat me like royalty for the rest of the year!"

You think for a second about this option. It's not like there haven't been photos of you taken at this party already, and you're sure there's no way those aren't being passed around school next week.
On the other hand there is something a bit different about this. It's one thing to have a blurry photo of you sprinting with your hands over your junk, but it's an entirely different thing to have a close up photo of you posing naked with a girl touching you. Even if Tammy doesn't capture your face if word gets out that it was you running around naked then people will probably put two and two together.

"Anything else?"

"I guess if you're feeling lucky Sam, I'd be willing to a little game of blackjack. If I win a round I get to add one of these deals or a smaller request, if you win a round you get to remove a deal or take the mask. We play until either you get the mask or I have no more deals to give you." Tammy explained. "If you think about it I'm giving you a good deal here. You only have to get lucky once and you'll be out of here with the mask and just owing me a date. Of course there's also the possibility you flop and a video of me slapping that ass of yours will end up on my Instagram by the end of the night..."