Yeah, the site I stole it from is also having a caption contest ... so, knock yourselves out.
1. "Rectum? Damn near ate him!"
2. SCOAMF thoughtbubble. "Am I perverted enough to fist my own dog?"
3. "Is it my turn to clean the dog's butt again? My tongue is still fuzzy from last time."
4. "Listen to that reverb! This dog's ass is a perfect echo chamber for my speech!"
5. Having narrowed his suspects to Bo and Biden, the SCOAMF prepares to collect a stool sample to compare to the one he found on the oval office rug.
Best of metalgarth
Jason Bigg's accused Bo of having a bleached anus. Only 1 person in the US was dumb enough to fall for it.
Best of Dr. Doom
"And when I say 'redistribute the wealth', that will be your command to attack Clinton and rip his throat out", instructed the President, "Do you understand - that's a good dog..."
Best of prince of leaves
"...But this right here is the round, and on a dog, boy, that's the best cut..."
Best of curly
"So THAT's what a pair of balls looks like."
Best of Carpe Phlogiston
There goes the rat! Sic 'em!!!!
Best of GregMan
"Hey, this would go great with some fava beans and a nice Chianti."
Best of Jack Reacher
SCOAMF wasn't amused when he was told that, although Bo wasn't yet housebroken, he might be if given four more years to try.
Best of Kaptain Krude
Best of Uchuck the Tuchuck
ORA: "My God...It's full of Czars..."