Some things are meant for adult audiences only. Many of these birthday ecards use sex and other adult themes in a funny way to wish someone a happy birthday. Just be careful who you send them to.
These birthday ecards turn up the sexiness level to high.
These birthday ecards use humor and jokes to get the point across.
These ecards feature some gross out humor that may not be for everyone.
These birthday ecards are fun for everyone no matter what age they are.