Snoop Dogg -- WELCOME TO ZAMUNDA! ... Throws 'Coming to America' Party For Son's Bday

ALL HAIL KING JOFFE JOFFER ... 'cause Snoop Dogg straight up transformed into the ruler of Zamunda last night for an INSANE "Coming to America" themed bday party for his son ... and we've got in the footage!!

Snoop threw the mega-bash to celebrate his 18-year-old football star son Cordell Broadus (who just committed to UCLA) ... recreating the famous wedding scene from the 1988 Eddie Murphy flick.

There were dancers ... there were rose petal throwers ... there was even a THRONE!!!

You gotta watch the video ... it's one of the craziest things we've ever seen.

BTW, we know what you're thinking ... and no, we have no idea if Cordell got himself a bath too.