Many of the comments made by earlier posters seem to have been used by the writer of this joke. I’m not the writer, but I sure have used this joke a few times in my life, as I’ve always considered it damn near a perfect joke…
Two dogs are sitting in cages next to each other at the veterinarian’s office (Two - the magic number!). One dog looks at the other and says, “This place is horrible, I can’t stand it. So tell me, what did you do to get brought in here?”
The other dog looks over and says, “Yeah, you’re right, it really sucks locked up like this. It all started yesterday afternoon. My owner is a big, fat, ugly bastard. He was cooking steaks on the grill in the back yard. Well, he left one hanging off the edge of the plate, next to the grill, with juice just dripping off it. I looked at it for a minute, and I figured, Ah, what the hell, I’m gonna grab it and run. And so I did. I damn near got the whole thing down, too, before he caught me down the street.”
“No, shit?”, says the other dog, “that sucks”.
“What’d you do to get brought in?”, asks the first dog.
“Well, my owner is a beautiful blond college girl. Last night she left the bathroom door open when she took a shower. I walked by and saw her standing there after her shower, with one foot up on the edge of the tub, toweling off. I watched her like that for a minute, with her back to me. My eyes started to water, I started slobbering, and I thought, Ah, what the hell. So I jumped up on her back and started fucking her like mad.”
The other dog says, “Holy SHIT! You’re being put to sleep for THAT???”
The first dog says, “Being put to sleep? No, I’m just here to have my nails trimmed!”.