"At least my trauma made me funny" No, it did not. I am saying this gently, not to be cruel.
You crack jokes about the terrible things that happened you to convince both other people and yourself that it wasn't so bad, and that it didn't actually hurt you that much. Laughter is a social signal that communicates a lack of danger, saying that it's safe to relax now. Feeling the urge to laugh when you are scared or otherwise stressed is an involuntary self-soothing measure as well -- laughter releases endorphins and relieves stress, it decreases your cortisol levels. That's why laughing in relief after narrowly avoiding something terrifying is so common. The entire purpose of laughter is to say, to yourself and those around you, "it will be okay."
On top of that, you are caught between the basic, pack animal desire to seek support by telling other people what happened to you, and the distrustful, self-protective desire to insist that you are fine. You say "I got hurt, but it's no big deal," in the hopes that someone kind will realize the latter part is a lie and somehow help you, and that someone cruel will believe you are very difficult to seriously harm and thus not sense weakness in you to prey upon.
Recounting your trauma is not funny, it is stressful to you.