Chugging himself

[rescuer]

In the programme "Still Game" ( a couple of male Glasgow OAPs) one asked the other if another man was "chugging himself"
Does anyone know the meaning of the phrase?

[Stephen_G]

How to put it delicately?

Having a barclays / Having a J. Arthur / a billy-no-mates

http://www.urbandictionary.com/define.php?term =chugging

Definition 2 ;-)

I'm not scottish, btw.

[rescuer]

I did wonder, JudgeNutmeg, but didn't think the BBC would allow it.
The characters were speaking of an elderly man who was in an old folks home. At least I think it was but I missed the first 10 mins or so of the programme

[juandelacruz]

I say you chaps, what does that chugging word mean?
Not a clue, old boy, some stupid bloody scotch slang.

What would you expect from the BBC?