Honey Boo Boo's Dad -- On Crutches After 4-Wheeler Accident

Honey Boo Boo's papa Mike "Sugar Bear" Thompson got himself a boo boo of his own yesterday... busting up his foot in a freak "mud boggin'" accident ... TMZ has learned.

For you city folk out there -- "mud boggin'" is basically when you take an off-road vehicle and race it through the mud. It's pretty awesome ... in a redneck sorta way.

Sugar Bear was boggin' his ATV at the time of the accident -- it's unclear if Sugar Bear broke any bones in the wreck ... but he was spotted rockin' a fresh pair of crutches outside of his Georgia home yesterday.

BTW -- nice pants.

Of course, an accident was bound to happen -- Sugar Bear and his buddies get up to some pretty insane ATV shenanigans ... just check this clip.