Whether you're out to make your friends laugh their heads off or keep your family rolling in the aisles, one thing's for sure: you need a funny birthday eCard that guarantees your recipient will laugh his or her butt right clean off. You've come to the right place! That's because each funny eCard we cook up is hand injected with Funny Serum, a patented chemical compound we concoct in our secret JibJab Labs (i.e. the men's room). This hyper-scientific formula has made JibJab Sendables eCards more effective than laughing gas. Just don't use them in any medical procedures!