a jar of cum. cum gar. typically said by people with low blood sugar or sleep deprived people. CUM GAR !!! CUM GAR!!!
it describes a jar of cum that contains all of the semen that could have possibly cured the disease called My Big Fat Cake Is Too Big For These Pants
or it can just be to spice up a situation
Person 1: wow i’m so bored i wonder what this situation needs right now
Person 2: HAHA CUM GAR
person 1: HAHAAAAHAAHHAHAA
person 2: HAHAHAHAHHA