i can't remember where this quote is from. Help!!!

[Silvershadnic]

I just remembered faintly this quote of someone angrily saying something to a character like: "Hey, I thought i said smile!!!" or "I thought I said have Fun!!!" before assaulting the character. I can't remember where that is from. I would appreciate the help.=D

 

[Passerby]

Joker said something similar.
"Why so Serious?"

 

[Genocide]

neither can i

 

[ChicagoJhawk]

Sounds faintly familiar but I can't pin it

 

[Kuroh]

Greeat teacher inozuka