here's a stupid joke:

a man takes his rottweiler to the vet and says, "my dog's cross-eyed, is there anything you can do for him?"
"well," says the vet, "let's have a look at him". so the vet picks the dog up and examines his eyes, then checks his teeth.
finally, the vet says "i'm going to have to put him down."
"what!!?", the man exclaims, "because he's cross-eyed!?"
"no, no", the vet says, "he's just really heavy".