The art of sticking your nose into other's business. Not only does the perpetrator muddle in the affairs of others, but often times is a trained expert in fucking everything up along the way as they do so.
A true fuck muddler can be a devastating force to be reckoned with.
Hey, have you seen Brad around? He's got a tendency to go around fuck muddling.
Last time I talked to him he fuck muddled his way into my sister's wedding. The dude ruined the whole thing. Prick.
When you proceed to shit in someone else's dishwasher, and if your not in Arizona you have to turn the heat on in the house, and then you run tthe dishwasher!!! Creating a musty feceies concoction!! Yep!
Some Scooby Doo cast member pulls off the mask of the monster and some random person that appeared in the episode's face is revealed. He then shouts, "And I would have gotten away with it too, if it weren't for you meddling kids"
The act on the part of two or more candidates or eligible people for a certain position of strength such as a political seat as just one example, to start throwing insults and accusations against the opposing party in order to make themselves look better by comparison.