The bartender says "We don't serve your kind in here. Get out"

The string leaves and walks down the street and asks a kindly looking lady, "could you please take my end in your hands and then rub your hands together?"

The lady (being kindly) says "Of course".

The string then asks the kindly lady to tie his end up.

The lady (being kindly) says "Of course".

The string then walks back into the same bar where the bartender (predictably) says "Didn't I just kick you out of her?"

The string says "I'm a frayed knot."