Fortunately, the bomb cannot work as there is not enough explosives or plutonium in it. The explosives dissolve in my stomach acid, while the plutonium passes through my body without causing any significant harm, as it is in its insoluable metallic form.
I detonate an antimatter bomb inside the next user. The resulting explosion has a yield of ten kilotons.
I use the ten kilotons to power a nuclear reactor that in turn powers a deLorean and its flux capacitor, sending my dead body back in time to when I am alive. I go and shoot you in the head for being so rude as to detonate a bomb inside of me.
The next user was burned to a crisp, their ashes dropped into a black hole, and the black hole sent into another universe. And the computer containing the data necessary to reconstruct their body was inside said black hole. Oh, and the universe it all went to implodes into a singularity, destroying everything inside it. The user is very, very dead.
I eat the calamari ring, and die from high cholesterol 80 years later (worth it)
The next user is locked in my treasury box which is:
I poisoned all the coins and as you are starving, you atempt eating one. Your destiny can't avoid this...
Before I eat the coin, I taste it just to reassure myself it is edible, I then realize it is poisonous, because its acid burned my tounge. I then make a makeshift teleporter and teleport myself out.
The next person is inside the world's most high security jail. You are in a solitary confinement room where you cannot see anything because it is pitch black, thus you cannot really do anything.
But...but...but...
Someone blasts me out. I am free.
Cracker64 uses the banhammer on the next user. They are IP banned from life.
I am battery acid.
And you can't buy new internet!
The next user is dissolved by me.