I use the word "criminal" jokingly.
One might say jokingly that if national legislation does not allow marriage by correspondence, then marriage by electronic means is also inadmissible.
She somewhat mockingly, perhaps jokingly called it a "down payment", giving entitlement to national insurance benefits for life.
I do not raise those points entirely jokingly.
I jokingly say to the constituents that it is no surprise because they are the two virtues that are the rarest among politicians—fidelity and courage.
I realise that this was said jokingly; but there is a certain amount of truth behind it.
I was a little surprised to hear him, perhaps jokingly, describe one of my noble friends as speaking for a particular organisation.
I say that only jokingly and by the way.