A true follower of Christ wouldn't be so easily tempted into sin. God knows you will face this test and you must remain pure. He is watching you. Do not stroke your cock. Doing so will lead you down a dark path, once you've gone too far there is no turning back. The weight of your sins will weigh so heavily upon you that you'll sink down into the pits of hell. You don't want to join the sinners in purgatory where you will burn. Resist temptation and bring yourself into God's light.