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1.
The kind of wind you break as a result of a full mexiclosure. This happens after eating a full plate of mexican food.... a serious mexican fart!
"Oh my god Alex! I had so much mexhaust after achieving mexiclosure last night!"
by PLAM! April 27, 2008
 
2.
The farting noise made by an old car that's been beans and riced out.
I saw a 1987 Corolla, looking fresh from the junk yard, turn a corner and speed away. The mexhaust really exploded; I was looking for skid marks.
by poopa25 February 14, 2012