When a male is having intercourse with a trophy-worthy female, he has a friend hide with a camera in the vicinity of the sexual action. Then, on some pre-arranged signal, the man grabs the female by inserting 2 or more fingers into her anus or vagina(operator's choice) and 2 or more fingers into her mouth. He then lifts her into the air for the friend to take a picture of. The result is similar to a fisherman's picture of his catch.

She really fought when a pulled a marlin on her. I swear she was this (holds hands apart) big.

To respond with great exclamation and anger when on the receiving end of criticism (most often intentional baiting). The recipient acts in the same manner as a marlin jumping from the water when hooked by a fisherman.

Dude 1: I saw your girlfriend, she's an absolute scrag Dude 2: Hey! Fuck you fuckhead! Don't be talking shit about my girl! Dude 1: Ha Ha... Sucked in ya marlin!

a crazy redneck who enjoys smoking and drinking very large amounts, often is too drunk or high to care about shit found in Hallettsville on the weekend at parties smoking and drinking not giving a damn. Often uses the words mother fucking in every other sentence.

damn marlin this party is crazy as fuck

a big fish that lives in the sea and is often caught by fishermen 4 food