the let's goguy is a pondering type of person who always extensively thinks about how to respond to a plan, but ultimately will always respond with the phrase 'let's go'.
ME: dude, how about we go to the city center and grab some food at the MAC?
Let's go guy: *thinking extensively about a correct response* let's go let's go!
ME: guys, let's go party tonight!
Friend: sounds like a plan!
let's go guy: let's go let's go!
The Multi-cultural Merry-go-Round is when a guy sits in the center of your local kindergarten playground's merry-go-round while one of each female race stands around the circle naked and bends over ass facing inwards. The merry-go-round is then spun, which gives the man in the center a 360 degree view of all the asses around the world.
"Dude, my girlfriend let me ride the multi-cultural merry-go-round last night and I've never been the same!"