Because you don't put the "D" in the big ones.
Because it turns "ice" into "mice" !
They are for those who don't drink!
Open it, if there's a 'd' in it, it's a fridge.
Daughter: Looking at peckers. M: WHAT ! D: Science project on chickens. M: Oh. D: You walked RIGHT into that.
Because she wanted the D. (I dreamed this joke last night. Not bad for a dream joke.)