look up any word, like dirty sanchez:
 
1.
Upside Down Volcano Shit
I just took the biggest Udvs ever, the toilet over flowed.
by KeithLzay July 13, 2008
 
2.
UDV
Urban Dyke Vehicle

Cars preferred by lesbians. For instance, anything made by Subaru.
There are so many UDVs in the parking lot of this Melissa Etheridge concert.
by kingofkeizer May 28, 2014