This is what we'd expect from caithness.org I reckon

3 pieces of string outside a bar plotting their way of getting in.

First piece of string walks into the bar...

Barman - "We don't serve pieces of string, get the hell out!"

Second piece tries...

Barman - "I just told your little mate, NO STRING! Get out!!"

Third piece ruffles up his 'hai'r and makes a few loops round himself...

Barman - "Don't tell me you're another piece of string?!!"

String 3 - "No, I'm afraid not."