He just added Acetic Acid until it became clear.
She couldn't find the 10 key.
Bee flat Music joke for those who don't understand. B flat is a note.
He didn't understand Flossophy!
Chemistry, because there is lots of acid involved.
I dunno, but I'll go down in math and chemistry too.
Me: (with a mouthful of salad topped with vinaigrette) I dunno.