Here are a few puns...
I once thought about cloning a new, more efficient brain, but then I realized that I was getting a head of myself.--------
I decided that becoming a vegetarian was a missed steak.
The indecisive rower couldn't choose either oar.
We were so poor when I was growing up we couldn't even afford to pay attention.
When the TV repairman got married the reception was excellent.
Finally here's a cartoon I just put on Facebook....
I thought that was funny, and clever... and profound. Ha!