Its when someone deep throats a male so much during oral sex that when they choke it down so much (all the way to the hilt). The individual can then fit the mans entire ball sack into their mouth. At which point it fills both side of there cheeks with his balls which then they resemble a hungry squirrel with nuts in its mouth.
Man I got the most insane blow job last night. This girl deep throated me so much that she gave me a Hungry squirrel