This strange commercial crossed the screen while I was waiting for The Simpsons to come on last night. They were selling a drug, and the customer base apparently consists of people who have bouts of uncontrollable laughter. The malady is called PBA, they said, and there was a URL for PBAfacts that appeared in the commercial. (No hyperlink here. Their "Web Site Linking Policy" says linking to the site constitutes an agreement to the terms and conditions therein. I was struck with uncontrollable laughter.)
Anyway, the affliction may be real, and if so, knowing about it is a blessing. Anytime you laugh at someone inappropriately, there's a built in excuse. "I'm sorry, I must have PBA." If they protest, say, "Hey, I'm the victim here!"
As a last resort curse and claim Tourette syndrome.