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1.
Any burp inbetween the time period of when someone gives a blowjob to when they brush their teeth.
Mark: I was laying next to my gf after she gave me a blowjob and realized she dicked burped on me

Justin: Gross. Dick Burp.
by PACHYCEPHALOSAURUS October 19, 2010
 
2.
Dickburp is the equivalent of a female queef. It usually sounds like a slight release of air through the penis. The more ammount of force exerted could rupture the vas deferns which would result in infertility.
While Luke was having sex, he experienced a dickburp.
by Garth Usher, Mike Hunt December 13, 2010