You're the only person in this cell, so "spooning" your cellmate isn't an option. You will, however, make a mental note to try it next time you are in prison.
And since you are alone, you have nobody to paddle you with the spoon, either. I guess your only option is to dig your way out...
It appears that your tiny spoon is no match for the mighty stone floor. You should probably stop tapping it against the ground, but you honestly have nothing else to do until you come up with something else.
As an aside, would you like me to start adding your suggestions to these posts in the form of quotes?