2: An item used to masturbate into. (toilet paper, sock, hotel bed sheets, etc.)
Bro: " yea man she's hot but she's fucked like the whole football team, she's a total cumsponge"
Example 2: " Dude: man I was jacking it the other day and I had to use my gym socks as a cumsponge"
Man: "dude that is nasty as fuck! don't tell me that shit dude!
"That girls cum sponge worked like a champ..."