I Don't Know, Can You - A loud, rude, and dumb way of saying no, like a middle schoo

A loud, rude, and dumb way of saying no, like a middle schooler who thinks they're a rockstar. It's just pure chaos.

Can I copy your homework? I don't know, can you.

Can I take your turn? I don't know, can you.

Can I borrow your phone? I don't know, can you.