[But- okay, okay, he is sort of dimly aware the situation shouldn't be quite this hilarious, and makes an attempt to be serious. He passes a hand over his eyes again even as he continues to giggle, however-- the room didn't spin earlier if he wasn't attempting to move around, did it?]
Young master, I... [pfft] I keep a fever reducer in the medicine cabinet. Did you...?
["Did you give me that already?" is what he wants to ask (yes, Sebastian, he gave you every fever reducer. along with four other every) but once again he ends up with some vague hand gesture before he just. focuses on not dissolving into giggles.]