Yeah.. Today I saw an older fat obese one in tights riding like he was doing the TdF right in the middle of Marine Parade Road.
Honestly he looked super unfit from the way he was pedalling (and changing the gears) but refused to give way to any vehicles behind him.
I think some of these white dudes feel a little "stronger" and "younger" due to the SPG crowd clawing at them. And end up doing "macho" stuff here that they probably never done or physically ill equipped to do.