This expression/saying originated in the Bahamas. It is another jungaless term used to show excitement and agreeance over a particular thing or event. It can be said while simultaneously hitting the wall or any solid surface nearby. Apparently, it's the successor of "Oh Yeah, Oh yeah, Oh yeah!" Seems like saying things three times is becoming a trend.
1. Keisha: Girl, I jus been to Fashion Trap #4 to get my outfit for Cocktails dis Saturday!
Princess: Girl i jus get mine too! I been on Wulff Road by Baby's tho! Da club ain ga be ready fa us! Both girls at the same time: Bam Bam Bam!!!
2. Girl #1: I want some chinese food!
Girl#2: Chile, canton house! BAM........BAM.......BAM!!!
3. Scenario: Party or Night at the Club. DJ plays "I'm So Special"
Everybody in the club: "BAM BAM BAM!!!"