My Friends are so Creative!

Thanks for all the great suggestions, everyone!

Here are my favorites so far:

LOL = MCRRC Leaving Out Limits

BRB = MCRRC Beats Running Backwards

ASAP = MCRRC All Speed and Performance

GTG = MCRRC Going Towards Greatness

ROTFL = MCRRC Run Over The Finish Line

JK = MCRRC Just Know

GFI = MCRRC Good For Infinity

IDK = MCRRC In Doubt? Kick!

TGIF = MCRRC Team Getting In Fast

WTF = MCRRC Women Tracking Fast

BTW = MCRRC Breaking Through Walls

I'm still looking for some more suggestions for:

T___ T___ Y___ L___

T___ B___ A___

T___ Y___

G___ M___ T___ A___

O___ M___ G___

I wonder if anyone is actually going to guess this theme without my telling them!