Not funny? Come on Clay, get a sense of humor.
This one's my personal favorite:
Two Aggie builders were working on a house. One Aggie was on a ladder nailing. He'd reach into his nail pouch, pull out a nail, look at it, and either toss it over his shoulder or proceed to nail it into the wood. The other Aggie couldn't stand it any longer and yells up, "Why are you throwing some of the nails away?" The first Aggie explained, "When I pull it out of my nail pouch, if it's pointed toward me I throw it away. If it's pointed toward the house, then I can use it!" The second Aggie got real excited and called him all kinds of names, explaining, "Don't throw away those nails that are pointed toward you! They're for the other side of the house!!"