Dan Hawkins’ newly-unwrapped guitar is a Gibson EDS-1275.
“Don’t let the bells end” is, obviously, a reference to a colloquial name for the glans. Was the whole song written around legitimately being able to get a rude term for a rude part into a mainstream hit song? Yeah, it seems so. “We managed to get bellend into a Christmas song without it getting banned!” Justin later said.
Justin’s girlfriend in the bauble is played by his real partner at the time, Sue Whitehouse, who was also the band’s manager. After they later split up, they carried on living together for a while, before Justin and his cat eventually moved out.