Used in the same way as "sick" or "nasty" or "ill", the descriptive noun "Nasty Sauce" denotes a positive quality by sarcastically using a negative term
"That game is nasty sauce!"
by EYDK September 18, 2009
Completely nasty, unbearably so. Such as some of the prank sites on the internet that are really naked old men.
by Spandecks August 31, 2008