How did CJ get nickname Megatron?

[TimESmalls 0]

And how can I get such a bad ass nickname?

[16 and 33 0]

RoY watched him practice and saw the future.

[nflocd 0]

It's not a nickname - that's what his mom named him. 'Calvin' is his nickname.

[krizay 0]

Well sector 7 named Marion Barber MBIII. So maybe Samuel Whitwickey named Calvin Johnson Megatron!

[Larry David 20]

Per Wikipedia.... "Former teammate Roy Williams nicknamed Johnson "Megatron", due to his large hands being similar to that of the towering Decepticon".