You can pick your friends, and you can pick your nose, but you can’t pick your friend’s nose, and nobody knows why!
You should be ashamed of yourself, but we all know why…
yeah, this cracked me up. 
Nicholas Cage is still a highly regarded actor, and nobody knows why!
Babies learning to walk stumble around like drunks, and nobody knows why.
Some boobs are hard, some boobs are soft, and nobody knows why.
Completely and totally talentless people have high-paying jobs on XM Radio… and nobody knows why!
Intestinal flora gets into a fetuses’ intestines despite the umbilical cord being sterile.
Someone let the dogs out and nobody knows why.
Carrot Top has a career … and Nobody knows why
Well, that should be fixed, at least temporarily, Thursday starting around 11:30AM Chicago time.
When dining out, your server will show up to ask how everything is… just moments after you took a big bite of your food… and nobody knows why!
When you misplace something, you always find it in the last place you look, and nobody knows why!
Every Thanksgiving, my sister offers all dinner guests $5 if they’d drink a pitcher of gravy, and nobody knows why!
OK, we know why. My sister is a goof who gets goofier when she drinks… 
Because nobody keeps looking after they’ve found what they’re looking for.
Intestines have nothing to do with the umbilical cord. They aren’t even connected. The umbilical cord is part of the circulatory system which carries blood to the heart and you most certainly do not want that hooked up to your bowels!
Babies are born with sterile guts. They only gain intestinal flora from ingesting bacteria once they start bottle /breast feeding. Hence why they get a Vit K shot immediately (gut bacteria normally make Vit K)
Glue makes things stick together. And nobody knows why!
WTF is the deal with hiccups?
Nobody knows why!
Some people don’t get the concept of humor and silliness, and nobody knows why!!!
I know why! Because you’re not in Cádiz, where the waiters need to be pursued and roped…
My dog refuses to face North when he poops, and no one knows why!
Why do some replies work in more than one thread No one knows why?
The tide comes in, the tide goes out, and nobody knows why!
Well at least Bill O’Reilly doesn’t know why.