Words, grammatical forms and meanings linked to the ontology.
fun up en · VERB
Meanings
To make something humorous or to make a joke about something
The pilot jumped out, and, funning up, called out, 'We sure owe you an apology for falling down that way on our protection, old man!' 2011, Blaine Pardoe, Terror of the Autumn Skies: The True Story of Frank Luke, page 85: