One of the many ceremonies at CTY sites (if you don't know what I mean, look up CTY on Urban Dictionary or Wiki, or both) consisting of the loss of 'virginity' for first-timers (also called 'sperms' and 'squirrels'.) Mine consisted of stuffing five marshmellows into my mouth and reciting 'Fuzzy Wuzzy Was A Bear' in all its childish glory.
When you're joking about something and it sounds like a sex joke, but is totally irrelevant to sex. And is merely about almost choking on a passionfruit in a pornstar martini