Best definition
The complete sucking and lack of skill in all forms of video games. If someone is suffering from waldmadump they

will lose no matter how hard they or anyone on their team(if it’s a team game) try.

Cory: Kevin what’s going on with you today you have died 10 times and haven’t killed anyone.

Kevin: I’ve taken a Waldmadump today man, I’m sorry.

Cory: Well we lost now.