When you take a shower and then screw (have sex with) your sibling like theres no tomorrow! However, for a West Virginia Saturda Night Party you must not take a shower and both siblings must recive anal (could be with fingers or private parts).
I was so frikin' horny last night and since im single and have no girlfriend I had a west virginia saturday night!
by BillyMaysIsNowAZombie August 24, 2009

When one spread honey on ones dick, then pours poprocks on over the honey. Once they start popping one performs Anal Sex on their partner. The popping of the pop rocks causes the the nerves and muscles of the anus to relax and the insewing rush of fecal matter is known as the SATURDAY NIGHT STREET CAR.
by Gendrix November 16, 2010

Any given Saturday when your whole crew gets absolutely wasted. The phrase is also coined to require a buddy to down their beer if they cannot recite the phrase properly on command.
by Ripp March 1, 2021

by jj1919191919 December 11, 2019

YO GIRL: Can we have a romantic dinner?
YOU: LITERALLY Saturdays Are For The Boyz
YO GIRL: Why can't we have a Saturday?
YOU: Becuz I'm not Hayden
YOU: LITERALLY Saturdays Are For The Boyz
YO GIRL: Why can't we have a Saturday?
YOU: Becuz I'm not Hayden
by DairyQueen30 May 23, 2017

When the girls leave and its only the two guys left and they refelect on wtf they are doing with their lives.
by WTFisWrong March 7, 2019

When you stay up all night with your brother doing Al-Lad and X ,smoking wax,playing fortnight being loud as fuck and getting in the feels cause you always get deep sixed in 2 place.
“Flyin Carpet out the storm , happier than a fat kid in a candy store, got wrecked on fortnight let’s play some more Sandy Candy Saturday Night
by Slimlongdingdong December 29, 2019
