The CMU guessing game for your forehead.
How to play: pick a deck, then hold the phone sideways on your forehead with the screen facing your friends. They shout clues (no saying the word!). Nod the phone down when you get it, tip it up to pass. Add your name to post scores to the leaderboard; "Your own words" stays private.
Tip: turn off rotation lock if the words look sideways. No motion sensor? Tap the right side for correct, the left side to pass.
Best round on each deck, and the best all-rounders.
One card per line: inside jokes, friends' names, your floor's lore.