You’re dead to me. I don’t fuck with you. It also could mean no.
Example 1: After finding out that Noah was being extra shady, Kirsten said “You’re beat bro” and ceased all contact with Noah.

Example 2:

Jack: Bro can you front me some weed?

Mark: Nah, you’re beat!
by Idontfuckwithyouuuu October 26, 2017
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