Anyone seen a fight at an auction?

If you have seen a fight at an auction who were the participants?

Was it:

1) auctioneer and buyers
2) auctioneer and facility people
3) buyers and buyers
4) whoever is left !

I witnessed a fight between two buyers on this forum. I knew it was getting serious when both buyers put the CAPS LOCK on. 

I knew it was getting serious when both buyers put the CAPS LOCK on.

I don't remember that. It must've been quite some time ago.

I don't remember that. It must've been quite some time ago.

It was a lame joke.

Never a physical fight but on three occasions a very heated verbal altercation between auctioneer and buyers. Same auctioneer, three different occasions, three different buyers.

Never a physical fight but on three occasions a very heated verbal altercation between auctioneer and buyers. Same auctioneer, three different occasions, three different buyers.

common factor=auctioneer

I have seen 2 buyers get into a shoving match at an auction.  The auctioneer put a stop to it by threatening to ban both of them and she is one of the main runs in this area so not an idle threat.

Another auction run has 2 guys that hate each other and they will verbally go after one another on occasion...in between when they are trying to run each other up on the lockers .