Always at the worst times too
Sometimes I'll randomly remember a joke or funny situation from years ago and suddenly grin or laugh about it again. Then people ask me what's so funny and I can't really explain.
That's when you gotta tell them "sorry, I'm slightly insane" then when you see their reaction, you can't help but laugh even harder. Works every time.
Neat now I will remember this meme and laugh whenever I'm supposed to stay serious
Me in class:
TFMFLMFAO