Pretty busy MM, i just found this and it made Oi larf!
Last job was a clinker! "My boiler don't work!"
"You've got no oil."
"You sure? I can see some in that globe there."
"Yeah, there's a wee drop of oil there in the tiger loop........ And a fekkin shed load of air you eejit!"
"Oh...... I'll order some then...."