Back in high school when we considered ourselves part of the "smart popular" clique (which was another way of saying we weren't popular), our parties were pretty tame (or lame) in that we didn't have alcohol and the women were of average looks (too be fair, so were the guys). Nevertheless, we had some good times and I enjoyed the lateral thinking puzzles that we tried to stump each other with. You are given an abstract scenario and have to ask "yes" or "no" questions in order to trace back what happened in the puzzle. I guess it is lateral thinking as there is only line of thought, or not. This was my personal favorite, and I would bust it out hardcore at later events, impressing some, losing esteem to others. Answer is backward after the picture, use http://www.revfad.com/flip.html to copy, paste and flip it back.
˙pǝıp puɐ uoollɐq ɹıɐ ʇoɥ ǝɥʇ ɟo ʇno dɯnɾ oʇ pɐɥ puɐ ʍɐɹʇs ʇɹoɥs ǝɥʇ ʍǝɹp ǝɥ ˙sʍɐɹʇs ʍǝɹp llɐ ʎǝɥʇ os ˙ʇuǝɔsǝp ǝɥʇ doʇs oʇ ɥƃnouǝ ʇ,usɐʍ ʇı ʇnq 'sɥʇolɔ ɹıǝɥʇ ɟɟo ʞooʇ ǝuoʎɹǝʌǝ ˙ʞuıs oʇ pǝʇɹɐʇs ʇɐɥʇ uoollɐq ɹıɐ ʇoɥ ɐ uı sɐʍ uɐɯ ǝɥʇ