DJ/serial cake tosser — is at it again … pelting one of

DJ/serial cake tosser — is at it again … pelting one of his fans straight in the face with a cake at point blank range … and TMZ has the footage.

Aoki had just finished making an appearance on “Jimmy Kimmel Live” … when he decided to take a break from signing autographs to whack an adoring fan in the face with a large cake.

Bet she got another piece off camera! LOL