Define Jmc Meaning

The young newly marrieds had had a great time with their friends. They had dined at a good restaurant and gone to a dance which finished at two in the morning. They went to bed soon
after they got home and they had a jmc

Me:wyd?
Them: nothin much why?
Me: oh okay jmc

I don't understand... why did they have to be a JMC? I guess it's just in their nature..

JMC kicks your moms ass!

ur a jmc