Anything that just doesn't flow properly. A strange moving object, or person. A situation that hasn't a good ending.
Damn, Luke's helicopter flies terribly gomestyle.
Have you ever noticed that Justin walks all gomestyle?
I can't believe you wrecked your shit, that is so gomestyle.
A hammeroid that is removed surgically, frozen, and sucked on in a similar fashion to a gobstopper candy treat, ideally on a hot summer day. In some cases it may become Saharan Chewing Gum.
He's that guy at work who keeps dropping the bosses in the shite, yet the bosses are too terrified to get rid of him in-case he spills the beans on the bigger stuff.
"Listen to Gobster over there! He certainly says it how it is, and he doesn't care who hears it!!"