I like to think he’s going, “since WHEN?!” since they’ve been friends forever and there’s absolutely no way in hell they haven’t done size comparisons.
I just love that in a few seconds, Stiles watches his entire life flash before his eyes, like I have, never, ever seen Stiles embarrassed before but man is he whiter than a sheet.
How has nobody mentioned the fact that Danny and Scott have probably both seen stiles naked? The showers in that school are like… the most public displays ever created. Literally everyone in the group has seen Jackson’s dick at least five times there’s no way Stiles’s team mates haven’t seen him in the shower at least once.
TBH I think he was more surprised Stiles was carrying around that thing.
(but Jeff likes retconning things for the lolz, so.)
And someone *needs* to write a fic about the virgin thing. Where everyone thinks Stiles is not a target anymore and he gets kidnapped by a bloodthirsty unicorn.