What is Upper Decker Double Blumpkin?
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The act of sitting on the top part of a toilet and shitting while getting head by the girl who is strattling towards you on the bottom seat while also taking a dump at the same time.
The raunchiest act of the famous "blumpkin" to the next extreme calling it the Upper Decker Double Blumpkin.
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Random Words:
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Do a girl in the ass
"Yo check that hottie by the door"
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Someone who is so intrested in you that if there was a peice of glass between the two of you, the other person would practically be lick..