I'm surprised they could even hear you talking to them after taxiing in!
One of the most stupid things I've seen personally:
We had two private jets on a section of the ramp. One stayed the previous night, one arrived in the morning. I showed up for 2nd shift, clocked in and went out to the ramp. We had overlap between the two shifts so there were a good handful of line techs on duty.
One of the duties of each shift is to use these things called FOD Razors to clean the ramp:
They hadn't done it yet so one of the LSTs was in the process of sweeping. Normally not a problem, but as is tradition both crews/pax show up simultaneously and get running. The jets are parked facing different directions due to a wind change overnight.
The guy drives the FOD razor truck
between an aircraft and a marshaller who is being guided forwards out of parking, causing the jet to hit the brakes and stop to avoid collision. Then the guy drives the truck between the wingtips of the two aircraft, both with engines running,
with a FOD device that occasionally pops up FOD, and then drives
through the jet wash of the first aircraft as it is taxiing out. I was completely dumbfounded.