Or drinking games that "up the stakes" a little... (pun intended) I like to see meat go up...specially "tube steaks" lol
Sorry! couldn't resist. bad, bad pun but fun, fun, fun.
You know like quarters, if you miss 3 times lose an article of clothing... errr... how about you play the song "Too sexy..." and everytime they say "I'm too sexy for...." something take a drink or lose whatever they are too sexy for ... like this shirt, or my hat... what you think about tha-at?
Get creative, that's what makes it fun, make some shit up.
How about watch a sexy movie? Or make a bet that the other's partner wouldn't ever do... (fill in the blank)
the options are endless... of course the first thing you need is willing folks. Uhh and lots of condoms. Sounds like you are on a mission.