When a male masturbates into a bucket for 2 months and then while fucking a girl throws it into her face. The bucket can have m&m's and other treats you would see in a McFlurry
Having sex with a girl that has a glass eye, as you pull out, rip the glass eye out of the socket and cum in her empty eye socket and replace the glass eye.
Tim: Hey you guysremember Tina?
Guys: Yeah...isn't that the bitch with the glass eye?
Tim: Yeah, I gave her the Mcflurry last night and she loved it!
Verb. The verb "to McFlurry" involves person with McFlurry, usually in fast moving vehicle, lauching said ice-cream through open window of another car on a hot sunny day causing massive internal mess and stickyness to occupants of unfortunate vehicle. The "McFlurryer" (noun), or perpetrator of the throwing act, traditionally speeds off, usually laughing manically.