When me and Brad tag-teamed your mom, we greased her up so bad she needed a fuck blanket afterwards.
A person who brings everybody the fuck down, like some kind of "wet blanket."
A blanket on which one fucks.
"Can't that shithead stop talking about his stupid fucking impetigo problems while we're trying to fucking eat? What a fuckblanket that guy is."
"It turns out I contracted impetigo from using my roommates' fuckblanket as a towel."