Heard a girl tell a guy about her boyfriend's trouble with achieving an erection the previous night. Of course, it was conveyed in a much cruder manner.
Kid in front of me was chewing on his pen cap and spitting tiny shards of it off his left side. Was transfixed and mortified; couldn't concentrate on the lecture of the last part of Aristotle's "Metaphysics".
Saw a sign-up sheet for a Spring Break trip to Brazil. Was interested at first. Noticed the scantily clad girls with legions of beads around their neck. Caption read: "Rio is sizzlin'!"