[pct-l] How do you distinguish scuzzy "Hiker Trash" from a grubby "Homeless Bum"?

[Georgi Heitman]

Can't remember the last time I approached a 'bum', but when I approach
'hiker trash' , I ask if there's any 'hiker trash' around, and they always
laugh...would a real, honest-to-goodness bum do that?
FireFly