star-gasm Share definition Flag A star-gasm is the awesome release of cum that occurs when a guy gets stoned, jacks off and blows his load -- he sees stars! Wow! I smoked some Shake, had a cumgasm, and had a star-gasm! star-gasm by USAF Cadet January 18, 2021 0 0 Get merch Get the star-gasm mug. Buy Now — $32.95 See more merch