Cbeebies organisms in your body.
Cbeebies is something that Dipsy, the green (yet his race is South African) Teletubby gives to unsuspecting kids that watch Teletubbies by injecting a needle with the Cbeebies virus which (Even Nobody AKA That Guy and the Undefeatables don't even know yet) is confirmed to be Tubby Custard and the Acid Lake's Giygas' Kolk with high caffeine soda. Even the darn adults who are sick get visited by Dipsy in disguise causing them to get Cbeebies and for them to combust just like the kids. The reason why the things that get shot with Cbeebies explode isn't confirmed. Even Humbah, the creator of Cbeebies doesn't know! The survivors, like the guy who wants entertaining and explaining pictures at the top of some pages, has Cbeebies.
Symptoms
Many kids and bimbos catch this disease like Paris Hilton, Margaret, Megan Fox and others. It causes severe farting problems, vomiting, explosive diarohea, unatural demonic screaming and extreme craziness and heebie jeebies (hence why it's called Cbeebies). The only man who has Cbeebies is Fred Durst.