fish blanket

When a girl squirts on you while you are asleep.

Boyfriend: I slept well last night because it was warm, but it smelt like fish.

Girlfriend: Oh! I suppose you like my fish blanket!

blanket fish

The act of covering a flat surface with blankets and pretending to swim on them.

Person A: Have you seen the blankets?
Person B: Yeah, I was using them.
Person A: Why all of them?
Person B: Because I was doing a blanket fish!