Hmmm

[Emery]

Two guys, not so bright, drive into a lumber yard. One guy goes into the office and says, "Yeah, I need some 4-by-2's." The clerk says, "Don't you mean... 2-by-4's?" The guy says, "Wait a second, I'll go out and check." A few minutes later he comes back and says "You're right, I meant 2-by-4's." The clerk says, "How long do you need 'em?" The guy scratches his head and says, "Wait a second, I'll go check!" A few minutes later he comes back... the clerk says, "Did you find out how long you need 'em?" The guy says, "Well, a long time... we're building a house!"

[green river]

That could easily be turned into a blonde joke