jackbag - A sock used to catch jizz during masturbation. It’s also a m

A sock used to catch jizz during masturbation. It’s also a mean way to call someone a loser.

My friend’s dad used a sock as a jackbag. It was pink and had glitter on it.

My teacher called me a jackbag because I used my sister’s sock to catch jizz.

My brother called my dog a jackbag because he got jizz on his sock.