The silliest person I know was deadly serious and no-nonsense at work. Their silly side only came out among friends. Maybe you just need to befriend a goose?
Believe it or not, I am actually really serious at work, unless we are friends. I have to be super accurate all the time and I hold myself to very high standards.
I asked my goose friend what he thinks about this and he just honked. Though I suspect he didn't hear me, since he seemed to be busy balancing on his unicycle (his feet can't reach the pedals, so he has to flap his wings to balance)