You've gotten in trouble with a Mob Boss, and as punishment have been brought to a sandy beach. You're ordered by him at gunpoint to bury yourself in the sand up to your neck. He specifies a spot that will have you drowning when the tide comes in. You have no way to contact any outside help, and you cannot overpower the mob boss.
The mob boss, however, is a stickler for logic, and if you can think of a way to do as he says without trapping yourself, he'll let you go and forgive you your transgressions.
How can you follow the mob boss's order and save yourself from certain briny death?