I don't know what

The stupidest way to say you're clueless about why you're attracted to something or someone, like you're a lost dog sniffing a random butt.

When you're stuck on a math problem so hard, you're ready to cry, and you just say this like it's a spell to make it go away.

You say this when you're so lost, you might as well be a confused turtle in traffic.

You say this when someone says something that's so wrong, it's like they're speaking in tongues, and you have no idea how to respond.

You say this when someone asks a question that makes you feel like they're trying to start a war, and you're too tired to fight.

You say this when you're telling someone to shut up, and you're too lazy to come up with a better way to tell them.

You say this when you're being lazy, and you're pretending like you don't care about anything.