Hubba Bubba is a bubblegum that was used in the 1980's as a trading currency for sexual favours. Typically it would be traded for a love-bite and fingering behind the local Chinese takeaway.
I was knuckles deep in stinky Donna, but I had to give her a whole packet of Hubba Bubba in return.
The guy that you don't want to be your prison cell mate.
Guy 1:"So you're going to jail?"
Guy 2:"Yup."
Guy 1:"Who's your cellmate?"
Guy 2:"Some guy called Big Bubba."
Guy 1:"You'd better pray for the death sentence."