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An analsaurus involves a very fat lady and a daring sexual mate. The man is having sex with the fat lady and decides to pull out and try to stick it in her butt very rapidly. The fat lady then becomes outraged and starts roaring at him as he keeps going deeper and deeper, thus making her an analsaurus.
I was coming home from the party when all of the sudden I heard a roar from my friends bedroom. I looked inside and he was in bed with an analsaurus.
by BADONKADONK LUVA April 23, 2009
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