To perform a cum bubble can be done a number of ways, best example is: when you and you female partner are knockin boots you both cum and as you pull out she quiff(pussy fart) causing her to make a cum bubble
After me and my girl busted a nut I pulled out she pussy farted and I show her make a cum bubble ........ Then it burst....... What a mess
by mike fisher March 22, 2004
A bubble blown using me-your-mum-and-her-anus quality cum, generally found to be sticky and chewy and a gum-like texture
After delivering a shamefully shitty blow job, the cheerleader began to blow a bubble with the sticky, chewy, gum-like cum that was left in her mouth. This pitiful attempt at entertainment actually turned on the jock and he spurted more in her mouth so she could do it again, since she swallowed the lot before....25 years to digest whore!
by Mizzle October 11, 2004