The sexual act of busting in your partner's hair and provoking anger when a regular cum shot is expected. After said act, use the cummins to spike said partner's hair, thus styling it to resemble a lunch lady.
The stuff you pay for at school or potentially the grossest fucking thing people do during sex ever. Holy fucking Jesus Christ!
I can't even explain this in a sentence because hot lunches are gross. That goes for both of the definitions. Man I can't wait to leave hot school lunches behind!