A day when you get a lot of things done, but overall it sucks.
Guy 1: So, how was work yesterday?
Guy2: Awful. I got all my reports filed, but I felt sick most of the time and then spilled hot coffee all over myself. Overall, it was pretty pro-suck-tive.
The Sneaky Suck is a blowjob given to you in a public space discreetly. The most common way of performing the sneaky suck is by giving the blowjob under a table. The sneaky suck is commonly spelt "Sneeky Succ".
Derek - me and becca performed the Sneaky Suck in the movies last night
Tom - what row were you in?
Derek - Front row
Tom - you're such a savage.