I first met Mr. Fantastik at a arms deal
Don't let it get drastic, think of how your moms'll feel

"Don't let it get drastic" He's speaking to himself with that line. Think of it as a nervous tick, he's stopping himself from revealing his true feelings for Mr Fantastik because of his mom's old fashioned way of what a son should be.

Also maybe he adapted to his mom way of thinking, now he's passing it on to us...

Idk but Mr Fantastik the greatest rapper of all time