Reynault learns that your birthday is on april first, which grants him immense entertainment, but one day when anon gets dreadfully sick, and reynault has to take care of him, Anon drops that fucking heavy ass line in his fever.
Reynault is already more concerned than he's used to, but even he can't quite help feeling displeased at that line
"Mon ami, it appears that my favorite joke was told upon that day. I do not feel so unfortunate to have heard it."
the true meaning behind those words is a bit difficult for anons fevered mind to process, but Reynault seemed... kinder than usual that day.

Anons addition

Reynault comes in to check on you, fairly close to your bed
you can see the look on his face, he's clearly deeply worried about yo-
wait a minute, how is he standing so tall? the bed's several feet off the ground
slowly peer over the edge of the bed
Reynault's standing on a supply crate
look back at Reynault
he has the biggest grin in the world on his face
you both bust out laughing at the sheer absurdity of it, even as your laughter quickly turns into a coughing fit and Reynault gets concerned again