"Idiot Detective Agency" joke

Three idiots try out for a job to be a detective. The trainer they have pulls out a picture. He asks them each separately, "How would you recognize this suspect?"

The 1st idiot says "He only has 1 eye"

So the trainer says "it's a profile."

Frustrated, he moves along to the 2nd one and he said, "how would you recognize this suspect?"

The idiot says "he only has one ear."

Even more frustrated he yells at her and says "its a profile!"

He goes to the 3rd idiot and once again he asks, "How would you recognize this suspect?"

The idiot answers "he wears contact lenses."

The amazed trainer goes and checks the computer database. He returns 5 minutes later and says, "wow! he does where contact lenses, how did you know that?"

The idiot replies, "he can't wear normal glasses silly, he only has one ear"