Michael Blackson 's introducing his son to the world ... though his own introduction to the kid was a bit delayed -- 'cause his need for caffeine made him miss the birth!

We caught up with the comedian and his fiancée Rada Cheang -- also known as Rada Darling -- at LAX Thursday ... and, we got a glimpse of their son Bruce Leroy , with their consent of course.

He's a cute kid ... though his dad's already ribbing him about his looks -- life of a comedian's son, we suppose. Play video content

Rada says she's the one mainly getting up for the kiddo ... and, Michael admits his major job has to do with paying for the kid's lifestyle.

We ask Michael if he was in the delivery room ... and, he says he was -- but, he left before the baby came out to get a cup of joe, and he missed his so

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