Top Definition
A massive load of jizz.

What Dustin G put's on Evan M's chin every morning.
Hey Nate you should of seen the Mayonaise dumptruck I dumped on Dustin's chin last night. It was glorious.
by Apollo Rocket July 15, 2009
Applying a thick and volumous load of mayonaise like consistancy cum on or around the chin of a sexual partner, whether male or female.
3 of the 10 men involved in the street bukkake were unable to leave a mayonaise dumptruck on the eager cum dumpster
by throbmelongtime July 20, 2009
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