What is the tank infected on l4d2 supposed to be

I Believe that he is supposed to be a steroid user. A boomer is supposed to be a baby. The Spitter is Brittany spears (lol). The hunter is a freerunner. The Jockey is a rapist (lol). The witch is an emo phycopath. And the charger is the guy who masturbates all day.