Teenage years are a rough time, especially for dads. From 13 to 18, Dad will undergo significant aging, stress wrinkles, sleep deprivation and hair loss. And that's only on prom night. Let Dad know you appreciate this awkward time in his life with these hilariously funny Father's Day cards. Illustrated by Randy Galsbergen, this card is perfect for fathers of teenagers. Remember, no one said being a teen was easy, so show dad you're supportive during this time in his life.