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1.
A slang word normally used over text or imessage. Lykeabau5 originated from the phrase: 'likeaboss', only Likeabau5 is used to described extremely awesometastic things. Like deadmau5.
Ex1:
Jim: How was it?

Bob: ...Dude, I fucked dat shit up Likeabau5!

Ex2:
Bob: I just got a 5-kill streak, Likeabau5.