Two strings go into a bar. The bartender throws them out, as they do not serve strings.
One of the strings arches his back and walks in on all fours. The bar tender "asks are you a string?" The string replys, "no I am the letter m." The bartender replies "you are a string get out of here!"
The second string gets an idea, bends over into a loop and messes up his hair, then goes into the bar.
The bartender says "hey, are you one of those strings?"