Because there were aligations of him molesting children, people are making all kinds of jokes about him, and a lot have to do with little kids... What that joke means is that there is a child visiting him, a big wheel is one of those 3 wheeled bikes kids have when younger.... Like for instance; Did you hear that Michael Jackson had to cancel a few of his dates,, Timmy age 7 and Johnny age 9 are said to be devistated. Jokes like that are going WACKO right now..