Cumstacking
When four dudes circle jerk over different ideas and never result in final consensus.
There goes Tony, Lang, Don, and Nino cumstacking over what the next move is.
Cumstacking
Use of ancient wisdom, herbs, chemicals, any means necessary to build monstrous quantities of ejaculate ( cum ) to blam all up in, or spackle onto, a partner.
I was cumstacking for a week and when I spackled my gift on her, she wept in gratitude.
Cumstacking
Putting on and jerking off into someone else's used condoms.
Kalvin took his roommates used condom and started a cumstacking chain by putting it on himself and jerking off into it for the next person.
Cumstack
When people talk/debate extensively without an end decision and/or action, for example Tony, Nino, and Buddha...however it's not the same without Donnie.
Donnie used to cumstack, Sadge.
cumstack
when your 6 month old stanky crust filled abomination is so hard it stands up like a stack... filled with cum of course.
Wow John, you've spent so much time masturbating that computer's basically a cumstack