Going hard toward something, usually used in a sexual sense, but not exclusively.
Katie was getting after Tim toward the end of the bar last night.

Jamar was getting after that homework assignment in the library yesterday.
by LifeSavr June 14, 2017
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To do it. To go hard. To go balls deep. To accomplish something. To improve upon a life-skill. To party with the sickest group of skiers or snowboarders this planet has ever seen.
She's checking you out. Get after it.

You're gonna be late for your pap-smear? You better go get after it.

You didn't land that jump? You didn't get after it enough.
by Spartan Ski Club October 21, 2011
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When a group decides they are going out HARD for a night of drinking they are said to be, "getting after it"
Dude, I've made an executive decision. It's been a long week and we ARE getting after it tonight.
by Andrew1122 February 26, 2008
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(v.) 1. To exert a great deal of effort in pursuance of some worthy goal 2. To perform coitus in a manner satisfactory to both (or all) parties involved
"Get after it dude!"

"Sorry man, I can't go to the hookah bar tonight, I've got to get after it with my girlfriend."
by Dareh Meyod August 12, 2009
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To aggressively get fucked up. To go big. To consume party drugs and alcohol in an effort to become extremely wasted, yet still fired up enough to stay up late.
by partyboysf March 30, 2007
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This is a phrase used to tell some one to get a piece of ass, or to go talk to that person in a sexual manner.
"Scott go get after that, she wont be there forever."

"Get after that, and smash that!"
by big B-F June 30, 2009
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