Practicing safe sex by wrapping yourself in a blanket so that fellow humans can't access your guy/girlie-junk.
The term "blanket condomnation" can also be a sarcastic term for the preposterous notion that you won't get preggo or contract an STD if you and the other person crawl under a blanket before you "do it", instead of just copulating "out in the open".
by QuacksO November 12, 2019