You are walking on your way home, but on a street you see some thugs carrying stolen items, they notice your presence and plan to attack you, but someone suddenly appears and defeats them, but that someone who stopped them was a mutant turtle, with an orange bandana, a belt, elbow pads and knee pads, The Turtle turns to you, he had some chucks in his hands, He smiles at you and begins to hide in the shadows.

"Booyakasha...."

What does that even mean?