Top definition
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!"
by Laughingpuma July 21, 2014
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