Be specific please

A conversation S and I had in the car this morning on the way to school:

S: I love these pretty flowers.
Me: You mean the ones on your drink.
S: No, my drink is water.
Me: Oh, the ones on the cup your drink is in.
S: Yes on the top by where I drink from. If they were in my drink they would be floating in the water and that would just be silly.
Me: You're right.