How To Surprise Your Boyfriend On His Birthday A Fancy Cake. Get him one of those fancy cakes that can be customized as per your instructions. Video To Wake Up To. Make the right use of your phone and make a video of you wishing him on his birthday. Candlelight Dinner. Plan A Trip. Some Sensuous Role Play. Special Scavenger Hunt. A 12 O'Clock Surprise! Write Him A Card.