Fuck

The opposite of a verb or adjective

Fuck it : It’s actually the opposite adjective verb combo
Fuck that: verb do the opposite
I’m going to the store... Steve said. Fuckit so I said okay I’ll stay home. (Rephrase and make it proper)
I can’t see out the window. Fuckit. Basically means to clean it so you can see out of it. (Make into your own words)