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An octagon-shaped jerk off party where every guy is trying to cum at the same time and all of them are using lube like it's going out of style. It’s like a group jerk but way more messy and way less cool. You’ll end up with a floor full of cum and a loss of dignity.
My cousin tried to do an octajerk and ended up crying because his pants were soaked.
At the octajerk, there was more lube than there was people.
I joined an octajerk and got a side effect of being too tired to eat for a week.