4. Put a picture of one of those age projection simulations on his bathroom mirror in the morning.
Make sure to enter extreme lifestyle choices like excessive tanning, drinking, smoking, eating to create a severely haggard and aged image. He should learn to be less vain!
5. Show him a picture of a sickly, disabled animal and announce you’ve adopted it.
Run through the medication/physical therapy schedule with him and watch him turn white. Then watch him turn red as guilty relief washes over him when you tell him April Fool’s!