1.
When someone touches your dice without permission.
2.
When you noticeably piss off the DM.
3.
When you walk into an ominous cave and roll low on a perception check.
4.
When you're the only person who brought their PHB.
5.
When someone in your party casts a spell as a ritual in the middle of combat.
6.
When the DM tells you to roll initiative.
7.
When your friend shows you a multiclass character homebrew.
8.
When the DM says "you have six seconds."
9.
When you get an attack of opportunity.
10.
When you roll a natural one.
11.
When you cast bless or bardic inspiration.
12.
When you come to a game with a new dice set.
13.
When the DM tries to get you to drink a mysterious potion.
14.
When you crit fail a medicine check.
15.
When someone asks you about the difference between a wizard and a sorcerer.
16.
When your party starts a bar fight and you're the only lawful good character.
17.
When you're waiting for someone to cast a spell because they can't find it in the PHB.
18.
When you roll so low on initiative it feels like you won't get a turn until tomorrow.
19.
When you have to choose between stabilizing a teammate and defeating the boss.
20.
When you complete a session and don't have enough XP to level up.
21.
And that sweet moment when then the DM asks you to describe your kill after a boss round.