I encountered one this morning. He got pissed off and said some abusive stuff when I took more than 30 secs with my first shot so I decided to have some fun with him.
For my next shot, I let the timer count down until I got a warning and when I went to take the shot, I waited for the counter to get close to zero.
At this point he was fuming and you wouldn’t believe the abuse I was getting so I just wound him up further by letting the counter get close to zero and then deliberately fluffing each shot until I got maxed out.
Sure, I lost but it was easily worth it to see him get so worked up.