Text the f**k back.

To be txted to someone who hasn't replied to your txt within the requisite 2 minutes.
A: WRU?
B: (no reply for 2 mins + 1 sec)
A: TTFB
by RAA August 01, 2005
Get a ttfb mug for your mate Manafort.
Oh i got some chocolate MUDCAKE, OMFG TTFB.

Friend 1: "For tonight we have some beers, goon, pizza, shapes, jagermiester carton of smokes". Friend 2: "TTFB"
by BlueB1rd 'tys' April 22, 2011
Get the TTFB neck gaiter and mug.