Gasman

[Jessica]

A man who installs or services gas appliances or reads gas meters.

[Gregory]

A man who is [going out] with a lady who is considerably older than he is. So called because he can often be found [servicing] an old [boiler].

[Justin Bieber]

Weed man, the plug, has the top shelf. [that gas] man. aka weed dealer. a LA term, because la weed is considered the best in the US, we would call out weed dealer [gasmen] because that got that gas man.