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1.
used to describe someone you think is cute or someone you adore.
Come here my little muffin cup so I can kiss you!
by kitty33 August 11, 2008
 
2.
When a man and man stick each others fists into their anus(ass hole) while moaning hysterically!!
Dude john and bob muffincuped last night
by Gabby Dobin November 10, 2006