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1.
to be dishonest
Example 1:

John: "tbh I just lost the game"

Leigh: "tbdh I haven't lost the game"

Example 2:

M1k3y25k1ll5:"your a noob you have 4 kills and 1 assist"

M@ch0m@n123: "tbdh im ranked number 1 in Yugoslavia"
by TeggyEgg May 09, 2010