The samurai would disembowel himself, and when the pain got to be too much to where he might shame himself, his second would decapitate him.
Step 1 Get a frisbee from the store or friend.
Step 2 Clean the Frisbee.
Step 3 Make sure your parents aren’t around
Step 4 Put something slippery on it, like butter or cream.
Step 5 Get really super pissed.
Step 6 Fold the Frisbee hard (this is crucial)
Step 7 Keep folded and insert Frisbee into mouth hard.
Step 8 Push hard until you can’t see it.
Step 9 Wait.
Step 10 Die.