Incidentally ..when Bob instructs 'Glitch' by saying "BFG"...do you think it means 'Big F*ckin' Guitar'?
I've always assumed it's a sideways reference to the BFG 9000 ultimate weapon in Doom but, yes, in this case the G=Guitar.
In a later episode (toward the end of season 2, I think) Dot wields a pretty good facsimile of the Doom BFG - her comment is "Do you think this makes me look a little too butch?"
Hang on… Here it is.

S02E10 'Web World Wars'