The act of wearing ugly-ass, generally generic-brand UGGs, particularly in a context in which wearing suede moon boots would to the casual observer seem strange and/or out of place.
*to one's daughter*
"Take off those damn boots - it's 60 degrees outside and you're wearing yoga pants - there will be no uggery in this family."
A completely made-up but powerfully expressive intensifier meaning "really really", "extremely", or "over-the-top". Used when regular words like very or super just aren’t enough.