Used to let A female know her butt crack is showing when bent over or crouching.

Not to be confused with the phrase ” your Carla is showing
A female bends over to get one of the guys a beer. One of the guys sees her butt crack sticking way!! out of her jeans. He then announces to everyone "hey your Alex is showing" She then covers it up and usually slaps the accuser.
by WFKST May 17, 2010
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