1. The explanation someone would give a young child when asked an awkward, typically sex-related question
2. The awkward parent-child conversation often referred to as 'the talk'
Billy: "Mommy, what were those lions doing at the zoo?"
Mommy: "Uhhh... wrestling."
Wife: "Honey, what should we tell Lucy? She asked me today what the F-word means and I told her I'd tell her later."
Husband: "Well she's too young for the sexplanation, so make something up!"