Alegrias1
You are seriously not trying to say that because some people are bilingual and can switch between 2 languages easily, that it is acceptable for Johnson to play to the gallery by using schoolboy jokes to make himself look funny to the gang back home?
Tell me that's not what you are saying
You're just failing to fall for his boyish charm, Alegrias. If he didn't act like a halfwit most of the time he'd go zipping downwards in the Nation's Most Loveable Clown stakes. It's what keeps his popularity ratings high.
(It's the only explanation I can think of because he sure as hell isn't any good at anything else; apart from impregnating random women, of course)