Recently Dan Savage said on his podcast that many teenage boys jacking off at home are afraid of their parents finding any evidence of their masturbation so although they are not at all turned on by the idea eating their own cum (or they may even be grossed out by it) they reluctantly ā€œlap upā€ their spunk to destroy the evidence. For some reason the idea of all these embarrassed teenage boys squeamishly lapping up their own cum makes me laugh. ;-)