My guess is that the semi-contorted expression is the result of what do you call it, a wad of chewing tobacco or a pouch or whatever between his front lower teeth and his lip.

I think when he's not or wasn't able to enjoy a Marlboro he was dipping.  I mean, where is this guy's peace when he's loading himself up on booze, nicotine, and marijuana all the time?

Watch this video and tell me what you think:

Snuff Film WMV Broadband

Snuff Film WMV Lowband