The act of involuntarily and immediately regurgitating cum all over a man’s penis during or directly after orgasm while attempting to swallow. This can happen from either a failed swallow or by the man’s penis being too deep (or being forced too deep) into the mouth of the person giving the blowjob.
Kate: I thought I had it, but when he started to cum he pushed in deeper and I couldn't hold it all and totally cumchucked back on his cock and bed.
Robin: Oh my God, was he pissed?
Kate: A little, but he was still in postcoital bliss, so he was cool with it.
I nutted in a glass and my girlfriend drank it like it was nothing and wanted more, but this time she got it stright from the tube, what a cumchugger she is.
While performing {fellatio}, your partner ejaculates in your mouth and his semen tastes so bad that your face puckers up, like if you sucked on a lemon.
Last night I was {going down} on my old man and I don't know what that fool ate, but when he {came}, his {jizz} tasted so rank that I had a Cumpucker for hours!