Lame birthday eCards and birthday greetings can really stink but our hilarious JibJab Starring You! Greetings are a breath of fresh air! In this funny video, an office full of flatulent co-workers sing “Happy Birthday” – with their blowholes! Upload up to six faces into this funny video greeting and watch the farts fly! Forget Happy Birthday eCards. This hilarious JibJab Starring You! birthday greeting is a gas, so go ahead and let ‘er rip!