This artist kind of touched on this gag once already in post #1088081.
Koizumi, bummed out yet again at having the generation gap shoved in his face (nasal voice).So I can stay by your side and not catch your cold!
Would you like an apple cut into rabbit slices?You need to be getting your rest. Did you take any medicine?...Yes, please.Koizumi has caught a cold.Are you all right, Koizumi-kun?If I got sick in the past, it would cause all sorts of classified information, so I was prescribed antibodies for the viruses of this time period in advance.*cough*Asahina-san, I appreciate your concern, but if you get too close to me, you'll catch my cold.Oh, that's no problem!Would you like an apple cut into rabbit slices?