If you're going to hand flowers to Madonna, please remember: Don't get her hydrangeas. A video of the pop diva accepting -- and then dissing -- the gift from a fan at the Venice Film Festival has gone viral.

After thanking the fan, Madonna stashes the offending flower under the table, rolls her eyes and says to the person next to her, "I absolutely loathe hydrangeas. He obviously doesn't know that."

Well, now everyone knows, Madonna. See the clip after the jump.