It's the optimum amount of baked beans to have in one can.
It's the max number of safe Jenga moves that can be played in a single game
So i read in a comment that read from another comment that heard from a guy that read in a thread that 195 was the apartment number of a group of friends or something, and they created a group called 196 after that finished but the memes were too powerful and it got out of control or something
The internet equivalent of that movie trope where you invite 5 kids over while your parents are away and the whole school shows up and destroys your house.
It's the optimum amount of baked beans to have in one can.
It's the max number of safe Jenga moves that can be played in a single game