Extreme Bubble Wrap
The act of rolling up a sleeve of bubble wrap and masterbating into it. Following this, the player(s) hold(s) up the sleeve of bubble wrap close up to their face(s), and proceeds to pop the bubbles of the bubble wrap, trying to avoid getting their own jizz on their face(s) in the process.
One of the best sex party games of all time is definitely extreme bubble wrap. It's very wrong, yet oddly satisfying.