Whilst I adore Cartman, and Southpark as a whole, there are other way to make a quiet nod at that episode. I'd of gone with 'Cissies', as it is nondescript, but to the right person, hilarious.
I'd also like to point out that Southpark has always been R rated (18 in the UK) therefore, it is generally not appropriate to quote Cartman around the server. Even though it is a mature server, being mature entails realising that Minecraft is overgrown lego, and therefore appeals to young children that often frequent this server. I really do not want my mates 7 year old kid reading or hearing anything that Cartman says, or indeed, the majority of what Matt and Trey say.