Hell-if-i-know (my grandma's favorite joke)
I don't know the exact price but I know they're pretty cheep
If your dad knew how you were acting he'd roll over in his gravy
Santa Clues. Credit: Curious: The Tourist's Guide
Walking Jk rolling
An irrelephant.
Because they're so good at it.
Ell if I know
Eliphino
The ability to tell a person to go to hell in such a way that they look forward to the trip.
Run like hell, she's got a grenade in her mouth