A guy who is so blind to see whats in front of him - when a girl is there wanting sexual pleasure - he takes the condom blows it stupidly as if it was a balloon.
"Karl why do you gotta be such a cockballoon bro? That chick wanted the D in the V so bad but you turned it loose you ass-hat !"
The pocket of air that can form over the tip of your penis when you do not put on your condom correctly. A cockballoon can break easily and make wearing a condom pointless.
Sam: How’d she get pregnant?
Dumbass: Well, I didn’t know that a cockballoon could pop.
Sam: Dumbass!
(verb): The process in which one's scrotum becomes compressed and settles quite near the man's penis (hence the name 'cockballing') due to exposure of one's testes to cold weather, water--preferibly salt water--, and even ice.
"I knew that I would soon be cockballing if spent too much time swimming with the cute sailors." uhhhhhh
"Daily cockballing has become quite the hobby among most male snowboarders and skiiers."
when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.
This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.