Folding laundry, hands down. Washing and drying are fine but folding just feels endless and pointless. It's like it all just unfolds again overnight. Is there a chore you always put off?
For me, it's interior OR exterior painting, because (if you want to do it right ;^) it's almost never quick. For 'sports' related chores, it's cleanup after shooting a revolver - 5 or 6 or more chambers to clean, instead of just one with an auto pistol. But I do like shooting & reloading for revolvers!