Top Definition
A blowjob given while the recipient is on the toilet, taking a crap and eating Taco Bell all at once.
I let this guy talk me into giving him a Mexican Blumpkin but couldn't finish because it stank so friggin much. I vomited on him, giving him an Irish Blumpkin instead.
by vexxie March 24, 2004
A blow job given while the receiver is on the toilet depositing Taco Bell squirts.
Little did Juanita know that I'd made a run for the border prior to what would become a Mexican blumpkin...
by Dr. Kenneth Noisewater February 16, 2005

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