WHAT DOES "Check me!" "You're good." something every girl understands.MEAN?

i became a fan of it on facebook so i wouldn't look stupid but in reality i have no idea what it means... some guy wrote "this group is sick" and a bunch of girls wrote LOL LMAO, ROFL and stuff like that! I have no idea what it is!
Update: NO you effing idot! thats not what i meant! YOU ARE SO EFFING STUPID!
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