I don't give two shits
Way of saying, I really could care less for this shit, and shut the fuck up. Wrapped up in one little phrase.
Example:
Dude #1: Hey, can you go water my plants while I'm gone?
Dude #2: I don't give two shits about your damn plants!
Dude #1: Hey, can you go water my plants while I'm gone?
Dude #2: I don't give two shits about your damn plants!