to make someone uncomfortable enough to share whatever they have with you. Such as to stay at someones house long enough for the host to feel like they should ask you to stay, and then eat all their food after they are asleep.
Taking really, REALLY immense delight in the misfortune of some loathesome person-like creature. Well beyond garden-varietyschadenfreude, a case of schadenboner lasting beyond four hours means the tumescent owner must seek medical attention.
The final exposure of Dan Rather as a failshit partisan back in 2004 gave me a 3-hour schadenboner..at least.