Sirius totally knowing Remus’ middle name is John but whenever he breaks out the full name he’ll throw in ridiculous middle names like
"Of COURSE he got a perfect score on the Charms exam, HE’S REMUS THADDEUS LUPIN"
"REMUS MICHELANGELO LUPIN, I AM SURPRISED AT YOU"
“Fuck, Remus Elizabeth Lupin—”
Sometimes I just sit and think about John’s wedding, and how when the priest said ‘speak now or forever hold your peace’, the two wait and while Mary’s looking at everyone sitting in the pews, John turns around slightly and catches Sherlock’s eye, and Sherlock looks at him helplessly wanting to say something but not knowing how and then priest just continues and HUSFjzdgf