Oh yes..the "Blocked" policemen. I never say "blocked" because half the time the guy hears the transmission anyway despite you thinking it was completely "blocked".
I agree with mega - not too long ago we were asked to turn 30 degrees right for traffic; however the call was blocked so we actually didn’t hear more than a word or so of the clearance but we figured the controller would repeat it.
We had no idea it was for us until a Cactus pilot asked who the call was for. First then did we realize we needed to turn - it was about 10 minutes later so I guess the controller either got busy or forgot about us and the fact we never replied to his call. Never hurts to double check. We thanked the Cactus pilot on radio btw; I guess that’s yet another no-no huh?