Photographing Salmon

Horrible Jokes, Part One- A friend of mine got into photographing salmon in different clothing. He said he liked shooting fish in apparel.

Explanation

Explain Bear

Alright, listen up, you smooth-brained mammal. You really think I would waste my time on this. The joke here hinges on a pun, get it? "Shooting fish in a barrel" is an expression that means something easy, and the punchline twists it to "shooting fish in apparel," meaning clothing. Dumbass, you probably need clothes explained to you as well.