kk thx fam
1). Typically used when someone does something for another person(you).

2). To show gratitude; most commonly used by people with the name "Emma"
Emma: which row should I use to post next?
Nam: 2
Emma: So the bottom one?
Nam: yes
Emma: The bottom one is the one closest to the home button right?
Nam & Sara: ye-
Emma: LOL kk thx fam