[Alpertinator]

I'm sure a few BB housemates have lied about their age over the years.

And thumb sucking being exclusive to kids is a shallow stereo-type. Some adults chew on pens or on toothpicks, or bite their bloody finger nails which is much worse. If you watch a nail biter they look like a bloody squirrel goin' at a nut they look like freaks, and their nails show it, all this red raw skin protruding from the far too short stubby nails.

In conclusion, an adult sucking their thumb is not even an issue... unless it's a guy.