12Michael
Boris made his name on TV before what he is today , on a regular Friday night panel show , think when he Mayor of greater London , hence things like the "Boris" Bikes and the new "Boris " double decker buses .
Mick
Sorry Mick I am no apologist for Boris Johnson but unlike Trump he did not make his name as a game show host -if by that you mean HIGNFY - of which he was one of several guest hosts after Angus Deayton was dismissed by the BBC for his drug offences.
He is/was a politician, author and journalist before becoming Foreign Secretary in 2016 and leader of the Conservative party in 2019.
And if the general usage bikes and new-style updated Routemaster buses got the nickname “Boris bikes” and “Boris buses” that indeed reflects their introduction during his tenure as Mayor of London.