BTHO

Grumpy people use "BTHO" when they want others to leave them alone. For example, a person who is tired of being asked when he's going to get a girlfriend might respond with "BTHO!"

You will most likely encounter BTHO when texting or messaging online with a cranky person, and you've pushed their buttons. You might also see it online forums or social media when arguing contentious topics, like politics, religion, or the GOAT athlete.