Top definition
Oral sex performed by a larger fellow, who is surprisingly proficient at it.
"Oh my god girl, you remember that fat kid John we used to pick on all the time back in High School? Well, he came over last night and went down on me and I swear to lord Jesus I never came so much."
"GRRRRRL IT LOOKS LIKE YOU'VE GOT A CASE OF THE CHUBBILINGUS"
by McDonicus Maximus July 19, 2013
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