There's a very old (at least 70 years) joke at the heart of this discussion.
A man drinking alone in the pub needs to have a leak before finishing his pint. To avoid snaffling, he takes a beer mat and writes on it "I've spat in it" and props it against his unfinished pint. When he gets back from the toilet, his sign has an addendum:
"So have I"
There's a very old (at least 70 years) joke at the heart of this discussion.
A man drinking alone in the pub needs to have a leak before finishing his pint. To avoid snaffling, he takes a beer mat and writes on it "I've spat in it" and props it against his unfinished pint. When he gets back from the toilet, his sign has an addendum:
"So have I"