Not sabotage, but mention of the cup of tea in the question reminded me
My sister used to work part time in a shop to earn money when she was a student. The manager was a decent sort, but he tried it on a bit, and used to ask her to bring him a cup of tea regularly.

He always insisted on having the milk in before the tea, as it tasted better, allegedly. So one day, my sister brought him his cuppa, and he turned to her as usual and said, "Thanks, but I hope you put the milk in first, did you?"

Her reply?

"Drink it and tell me".

He didn't ask again after that.
( K2k6 has a proper job these days, Fri 19 Sep 2008, 9:18, 3 replies)

not me but...
a mate of mine can actually tell the difference.

Tastes the same to me though.
( SpikeyPickle wishes he was mabazaritchie, Fri 19 Sep 2008, 10:34, closed)

There really is a difference
How can you people not tell the difference (unless you are the sort of people who put loads of sugar in, totally overpowering the tea taste). Even when I'm so drunk I can't stand strait and the tea is made in a different room I can tell
(madsporkmurderer, Sun 21 Sep 2008, 19:46, closed)

First?
The milk goes in last. And as for people who make tea and coffee with the same spoon!FFS.
(kitescreech still here, Sun 21 Sep 2008, 20:30, closed)