I know you've seen the stickers and said: Hey, I want to know! Then you saw my pictures and you really needed to know.
If you needed to know that then you definitely questioned Mon the Biffy. I had to look this one up in an urban dictionary because my Scottish slang is, well, non-existent.
Meaning #2: "Mon" Scottish word that essentially means "come on". Often used to complement a band, person or...well...anything really.
MON THE BIFFY CLYRO
Meaning #3: "Mon" used mainly by Biffy Clyro fans-- "Mon the Biffy!!" screamed the boyo. - This is screamed at every moment anywhere at any time.
MON THE BIFFY, CONVEX CONCAVE noW
Meaning #7: "