The year of high school that is just there. You are not a freshman anymore, but you are not an upper class men yet. Because sophomore year is pointless and just simply does not count for anything, just fuck it. Fuck shit up like there is no tomorrow because it does not count and nothing matters. It's like a free year in high school where you can just do whatever you want.
Person #1: Hey wanna get fucked up tonight
Person #2: It's a Tuesday night
Person #3: Fuck it it's sophomore year