i dunno lol - The phrase you use to cover up the fact that you don't know

The phrase you use to cover up the fact that you don't know anything. It's like your brain is screaming 'help me!' but your mouth just said 'lol'.

My friend asked me how to beat the game. I said 'I dunno lol' and played a song on my phone.

My dad asked why my sister is crying. I said 'I dunno lol' and ate a whole pizza.

My teacher asked me to solve the math problem. I said 'I dunno lol' and started drawing aliens.