Top definition
The newest way of stating that someone is lying. Also can be used as a "reverse psychology' to get someone to prove something.
John: The girl I went out with last night was so sexy.

James: Lion Ass!! You were out with your brother last night! I saw you!!


Carlos: I got a new tattoo!!!
Jeremy: Ooh, cool! Send a pic!
Carlos: Uhh, I cant.
Jeremy: Why not? Hmm, Lion ass!! you aint got no tattoo!!! Prove it!! Pics or lie!!
by w00t & M9 May 11, 2009
Get the mug
Get a Lion Ass mug for your cousin Paul.