Jumble

Unscramble these four Jumbles, one letter to each line, to form four ordinary words.
OET
_ _ _
AILM
_ _ _ _
TYO
_ _ _
AGR
_ _ _
NFU
_ _ _


Now arrange the letters underlined in red to form the surprise answer to the following riddle:
"What Ernie will have after his first brain surgery"

"_ _ - _ _ _"