Boomf is a card company that specializes in cards for special occasions, such as birthdays, anniversaries, or Valentine's Day. They have a wide variety of cards to choose from, including ones with funny sayings or cute designs. Their birthday cards are especially popular because they're customized to your specific wishes and preferences. You can choose the size, shape, and design of the card yourself, or they can create it for you based on your preferences. You can even add photos and videos to your birthday card if you'd like.