Big Bro (S09E01)

Frylock is having a fun time with Gerald, a nine-year-old boy believed to be Carl's son, as they work together on a soap-box derby car that echoes the design of 2 Wycked. Just as they’re getting into it, Carl shows up and, in a fit of frustration, wrecks their creation. At that moment, Gerald's mother arrives in a car, hinting at a backstory where she might be a hooker whom Carl had a fling with.