Snack o'clock Share definition Flag In an office setting, this is a time that snacks are comsumed and it is usually around 3pm. Yo, what the hell is going on? It's half past snack o'clock (3:30) and i don't see no snacks! Snack o'clock by OFWG May 13, 2006 0 0 Get merch Get the Snack o'clock mug. Buy Now — $32.95 See more merch