Muckls refers to strong well developed muscles.
Think hurcheon strength, worthy of gods.
"hey look at those muckles! He must've been training for decades!*
Little bitty ring around a hogs ass.
Is a muckle a ring around a hogs ass? No, a muckle is a little bitty ring around a hogs ass.
Shut up before your coworker muckle's on to you and drags you across the floor