To creek: to over think a situation/feeling until it is far more complicated than it really is. taken from the teen drama of the 90's dawson creek, were teenagers would over think/ have far more than nessary deep and meaningful conversations.
Creeking to over think to a stupid level:
eg
Dawson: describing heartbreak It's agony. Complete, excruciating agony. It's like your heart has been ripped out of your chest and stomped on, and you can't breathe... you don't want to eat... you can't function. It's the most intense pain that you'll ever feel, and the worst part is, there's no way to relieve it. It's unyielding, merciless torture, and you *know* that it's yours for life.
When a person gives another person a blow job (oral sex) but specifically under a bridge out in the countryside.
Michael: Hey Jerry guess what I did today?
Jerry: What?
Michael: Me and my girl met up and went creeking!
Jerry: Well that must of been really uncomfortable.
Michael: It was awesome though dude you should try it! And it’s very wet and rocky!