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Anything that is lame, weak, or not enjoyable in any way, can be summed up with the phrase loose butthole. Seeing as most people don't enjoy a stretched crack, this term should be reserved for only the most deserving moments.
" I can't believe i wasted $10 to see Battle: Los Angeles"
" Yeah that movie was loose butthole."
" The loosest!"
" Yeah that movie was loose butthole."
" The loosest!"
by BearssFan May 25, 2011