Top Definition
The act of ejaculating so voluminously into your partner's mouth that his/her cheeks inflate in the manner of a famous American jazz trumpeter.
"Holy fuck, Chris, take a full load I want you to Jizzy Gillespie."
by Sal Platter August 13, 2007
1 more definition
When a man squirts his baby yogurt into the mouth while being blown like a trumpet.
Bro, I pulled a Jizzy Gillespie on her while she blew me and poured my baby yogurt all over her.
by Premiere April 03, 2015

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