The whole Kardashian crew has been seen spending time in Mexico this week for Kourtney's Birthday and they've all been posting their hot bikini pics on Snapchat and Instagram and every social media platform you can imagine. Yesterday the Birthday girl posted this one of her booty and more people were focused on the fact that her caption said "This is how we do it down in Puerto Rico" when in fact she is in MEXICO. Some of the comments are hilarious, people calling her an idiot, saying 'YOU'RE IN MEXICO!!'. Guys, she knows where she is. The caption is lyrics to DESPACITO! The remix to the Luis Fonsi and Daddy Yankee song that Justin Bieber is on! And guess what? That line from the song in her caption...it's the part Justin sings! Hmm...is Kourtney missing her beau Justin Bieber?