Not gonna lie, until I see footage of his dwarfhand being covered in another man's jizz I have a hard time believing the handy taxi story. We assume it's true because we cannot imagine making up a self-damaging lie like that, but to me giving a hand job to a guy in exchange for a service is exactly the kinda thing he'd lie about.
Fits in with him being a 'shock jock' trying to get attention, as well as his views on prostitution that he tries to peddle. Way more likely to me that he gave the guy money for gas and a sandwich.