You Got Any Avocados?

A duck goes into a bar, and waddles confidently up to the bar.

"Er. Can I help you?" Asks the bartender.

"Yeah. You got any avocados?" Asks the duck.

"Uh. No. This is a bar." Says the bartender. "We don't have any avocados."

Disappointed, the duck waddles back out.

The next day, the duck returns to the bar. Once again he waddles up to the bar and asks the bartender, "You got any avocados?"

"I told you yesterday, buddy. This is a bar; we ain't got any avocados." Says the bartender, a little perturbed.

Once again, the disappointed duck waddles back out.

The next day, the duck goes back into the bar. Again, he walks up to the bar and asks the bartender, "You got any avocados?"

Angrily, the bartender reaches over the bar, grabs the duck by the neck and yells in its face, "Look, buddy! I told you yesterday, and the day before... This is a bar! We. Don't. Have. Any. Freaking avocados! If you come in here one more time and ask me for avocados, I'm going to nail your bill to that bar!"

The bartender drops the duck and it leaves, visibly shaken.

The next day, the duck comes back in, walks up to the bar and looks up at the bartender expectantly.

The bartender glares at the duck and with menace in his voice says, "Well?"

"You got any nails?" Asks the duck.

"No." Growls the bartender.

Smiling brightly the duck says, "In that case, you got any avocados?"