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1.
A way of life. Slutty + classy = slassy.
Get slassy.

"Your shirt is so fancy, pull it down and show more tit, then you'll be slassy."

"That bachelorette party looks so slassy!"
by Slass Master August 10, 2013
 
2.
Mix of the words "Swag" and "Classy".
"Look at him all slassy for the wedding, he stands out more than the groom.
by Mr.Hyde March 01, 2013
 
3.
a classy form of sleaziness.
Yo, that bitch's outfit is soo slassy. Its like she took her crack money to holt renfrew.
by debo-bjobs October 25, 2006
 
4.
1. classy in the form of slassy
2. skeezer who thinks shes classy but truly isn't from the way she acts-(being disrespectful, childish, bitchy, and or thinks shes big)
Rosie thinks and says shes classy! HAHA! Can you believe that slassy-ass bitch!
by patd! May 09, 2008
 
5.
a style of dress for females that is a cross between slutty and classy (ie. whore-ish looking formal wear)
"Yo, did you see Melinda at the New Year's Eve party the other night? She was looking slassy!"
by Taff Dogg January 02, 2008