A saying among 4x4 and off road enthusiasts. Its said after damage normally cosmetic to minor parts damage has occurred on there rig or vehicle. Shitlbuffout is shit will buff out as in the shit being the damage will buff as in painted over cleaned polished or "buffed" out.
Dude 1-Lets go up the hill.
Dude 1-OH SHITTTT
*rig flips and hits a tree*
Dude 2-DUDE your yoda has a gnarly gash in the side panel
Dude 1-AHH shitlbuffout lets go.