Alas, he ran into some trouble while auditioning for Director Adam Shankman.

Keep reading to find out why Efron almost couldn’t stick the part in “Hairspray.”

According to Efron, Director Adam Shankman actually thought the actor smiledtoomuch.

Zac Efron makes surprised face

(Did you think it was possible to see too much of thoseattractive pearly whites?)

Efron reportedly tried to tone it down, but that only made things worse.

“It was impossible.

Zac Efron smiling

We’d definitely be thelastones to complain about Zac Efron smiling too much.