1 definition by Laughingpuma
Trollmau5 means that deadmau5 (pronounced dead mouse) trolled you or someone else usually on Internet. Deadmau5 troll on the Internet a lot, so some of his fans thought that when they see him troll someone on the Internet or on a livestream they will comment or say "trollmau5!"
Deadmau5 fan1: "hey did you see deadmau5 troll in that livestream?"
Deadmau5 fan2: "yep, he is a trollmau5!"
Deadmau5 fan2: "yep, he is a trollmau5!"
by Laughingpuma July 22, 2014