A version of the phrase, "fucking yucky" that may bypass the onboard censors found on many internet fora.
{From an online group with the topic of being a grocery store employee}
{Marvin Batech}: When some smelly, fat woman that smells like she hates showers reaches three feet into her boob and armpit crevices to fish out $5 and then they make a face when I grab that shit with my sleeve.
{Craig Johnson}: O MAN THAT'S YUCKING FUCKY!!!
A way to express something nasty in your mouth that you can't spit out
That last hit was just yuck-n-fucky