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1.
the act of one placing their mouth snugly around anothers anus as while deeply inhaling an unforgiving blast of tastey flatulence
"susie was being a total bitch so i forced her to take a rip off of the mexican bong."
"oh gregory, i love sucking on your ass and breathing in your delicious bodily pollution."
by Barnaby Jones December 21, 2004
 
2.
A shitty roadside job portable restroom. Refers to the tube inside the port a john where the stink is emptied through.
Where's Paco?" "He's hittin the Mexican Bong.
by dewey huevos April 09, 2011