Boy am I sensitive today!

Mum: Who took out the cotton in the box?
Me: I don't know. *busy reading sms from M*
Mum: The cotton was left on the table. It's dirty already.
Me: I said it wasn't me!
Mum: I didn't say it was you!
Me: No, but you raised your voice! You didn't have to do that!
Mum: *silence, continue to clean the table with an irritated look*
Me:

Sigh.