Cowabunga Dudes!

I often wonder how it was possible to transform 4 Turtles into half human beings. I'm not scientifically minded enough to answer such a question so I'll hand over to the great philosopher of our time, M.C.Hammer:

Heroes on a half shell, they're on a mission
When there's a battle got the enemy wishin'
That they stayed at home, instead of fightin'
These ninja masters with moves like lightnin'
They were once normal, but now they're mutants
Splinter's the teacher so they are the students
Leonardo, Michaelangelo, and Donatello,
Make up this group with one other follow
Raphael, he's the leader of the group
Transformed from the norm by the nuclear goop

Blip challenge entry - Done.