An activity practiced by some male teenagers in which they compete to take photographs of the backsides of attractive females without them knowing.
Example 1:

Bob: Damn! You see that?
James: Yo I gotta capture that ass!

Example 2:

Anthony: Lotta girls here, dude.
Mike: I know, man. Time to capture the ass.
by TheParkourPunk August 1, 2008
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