Suck me is a party game with a sexual element, since it involves passing stuff along by sucking on them with your mouth.
It's really fun to play and you will only need a deck of cards and some willing guests.
Form a line or a circle with your guests. The first player takes a card and holds it on his/her mouth by sucking on it. Then he proceeds to pass it to the person on his left using only the suction power of his/her mouth and that person takes it with his/her mouth(basically it's a kiss with a card in the middle).
Players continue passing the card until someone drops it. There are a few things you can decide to set as a punishment for the dropper:
Use something else instead of a card. You can turn the whole thing really sexual by using objects like a banana or something similar. You can also use something that actually allows the lips to touch. Use your imagination!