You are Shadow Milk Cookie!

You would laugh psychotically, A silly but manic grin plastered on your face.

"Oh, Silly Vanilly~ You're just so silly, So silly!" You would say in a sing-song voice, Being crazy as usual.. And using the same lil' nickname.

Pure Vanilla Cookie puts his hand on his head.

"Please, Just- Stop!" Pure Vanilla Cookie says with slight fear to his voice, His pupils narrowing—Including his staff's pupil.