OH YEAH!
The slogan of the kool aid man, used jokingly by people after another person says 'Oh No' or something very serious.
Example:
Judge: I sentence you to 24 months in prison
Lois: Oh no.
Meg: Oh no.
Brian: Oh no.
Kool Aid Man: OH YEAH!
Judge: I sentence you to 24 months in prison
Lois: Oh no.
Meg: Oh no.
Brian: Oh no.
Kool Aid Man: OH YEAH!