and it is crowded, he fights his way to the bar and orders a pint. He had hardly taken a sip when he felt the need to visit the loo.
Thinking, "if I take my drink with me I'll probably spill a lot. If I leave it here, maybe it wont be when I get back."
He took another sip which only made things worse on his bladder, so he quickly scribbled a note - 'I spat in my beer!' and left it by his glass.
He struggles to the loo, relieves himself, then struggles back to find his beer.
On the note, in several hands is written "So did I!"