A situation that occurs involuntarily after getting assrammed full of baby gravy, and subsequently squeezed/hugged so tightly, you effectively ejaculate from your anus.
Zaq: Ack, what is this stuff all over the place?
Ara: Sorry, got gay earlier and Kaz ran up and gave me a hug before I had time to clean out. Made me buttjaculate on the floor.
Riley Reid used to make people cumjaculate in her earlier days when they could genuinely fantasize her being an innocent youth. Little did they know...
A bloody ejaculation, usually caused by the intake of menstruation from having sex with a woman on her period. Sometimes caused by shoving large objects inside the urethra, such as an umbrella.
"I had sex with Melody last night. She didn't tell me she was on her period, and I blejaculated all over her!"