krahyst bōōst-ed jiz gahy-zer
–noun
1. An ejaculation; discharged so savagely that it could have only been performed under the benefaction of our Good Shepherd.
Cum in you? Did I cum in you? Bitch, are you blind? That was a Christ-boosted jizz geyser! I'm done with you. Don't call me anymore.
A cum geyser is when 2 guys are having sex and they both get close to finishing and they put their cock heads together so that when they cum, it shoots up like a geyser.
Tony, we need to clean the ceiling off from our cum geyser last night.