cum keyboard

A keyboard which has been cum apon so much that it has formed an extra layer over the actual keyboard and has a hard inside layer amd a wet & sticky outside layer. Usually some keys get stuck together and the whole thing is sticky to where it is unusable.

Gamer boi: "I went to play fortnite last night but my keyboard was so sticky that my hands kept getting wet and they stuck to the keys."
Old girl: "well maybe you should clean your cum keyboard Johnny!"