Scenario 1
Teacher: What did you do over the weekend?
Student: Oh I ate and slept and I went swimming at my friend's house and then we played video games and talked about video games and bla bla bla bla bla
Rest of class: Uuunngghhhhh...zzzz
Scenario 2
Teacher: What did you do over the weekend?
Student: Oh, lots of stuff.
Class: Cool.
Stuff is what youre always doing. You can never not be doing stuff. not doing stuff is completely impossible. If ANYBODY trys to tell you that they arent doing stuff, they are lying. Breathing is considered stuff as well as sleeping