I felt that one! - A big, ugly noise you make when you feel pain or see someone

A big, ugly noise you make when you feel pain or see someone else feel pain, usually with some extra swearing.

I got stung by a bee. I made a noise so ugly my dog ran away.

I watched my friend get hit by a bat. I made a noise and called the guy a idiot.

My brother stepped on a Lego. I made a noise and told him to die.