These guys don't know how close that homeless dude came to busting one of them in the head with that bottle.
Me and my buddy used to give homeless dudes and some cigs if they'd keep an eye on his car while we were at a hockey game or some such. One day this homeless guy tells us that he'll do more than keep an eye on the car, he'll kill anyone that messes with it and proceeds to pull a foot long hunting knife from his jacket. Needless to say he got some extra cigs and another because you can't get better service than that.
This would be funny if it didn't happen to me at least once a week on the Metro. Homeless people are like that, it's only funny for the first 18 or 19 years of it, then you just filter it out.