This word is used interchangably (and equally effectively) as both a noun and an adjective. An "uck" or "ucky" is someone who is portraying more than the usual amount of maliciousness, selfishness, butt-headedness, or just down right stupidity. A person can be described as "ucky," but does not quite qualify for the "uck" status. "Ucky-bucky" is the epitome of uckiness.
noun: "Rachel has been such an uck lately...Katie also thinks she is a real ucky-bucky."
adjective: "I can't believe Rachel ate all the speghetti...that was so ucky of her!!"
1) Refers to someone who smells like a mixture of cat piss and Don-Russ Baseball Cards. This person can be an "Ucky Muckster" as in a noun or the person can be preforming something like a dumbass and he/she will be acting "Ucky-Mucky".
Other terms for Ucky Muckster:
* Ucky Mucky
* Mucky Duck Sause
* Murky Dish Water * Baby Mucktar
* Muckstar
* Ducky Muckdumpster