Why do Spartans shart when they die?

Splffffssppbbbppp… I’m dead.

Do the power suits just store and purge it upon death or something? Maybe to balance the gas pressure in the suits so they don’t explode during delayed evacuations?

Gameplay. Not actually canon.

wait, what?

Spartan 117-John -Yoink!- Pants

Was this really necessary? Show some decorum.