[PAR35]

", I mess it up intentionally (nothing destructive) so that they’ll never ask me again."

Sounds like you are a coward as well as a passive-aggressive jerk. Man up and just say "no". You sound like the kind of guy who would use Gillette.

[glorgau]

Sounds like you are a coward as well as a passive-aggressive jerk.

Hey, it's not like I don't warn them first.