I would be totally down for some "most embarrassing moments" from any Twilight character that strikes your fancy (or five, or ten...)
I meant embarrassing stories from my days as a twilight fan as a child but I will do my best, my headcanons are kinda meh.
Once Carlisle blew his cover by asking the nurse to give him some leeches for blood letting, lets just say HR was not very happy and neither was Carlisle’s patients.
When Jasper first went back into civilisation he pushed a human girl into a bush because he was shocked that her ankles were showing and “it is far too improper for such a young lady to reveal her ankles.”
Also when Alice and Jasper first met Alice took him to the pictures and when it started this 6 foot, muscled, scarred warrior screamed the loudest, most high pitched scream possible. He was terrified by the moving pictures at first.
Also he was convinced that electricity was magic at first. It was so bad that until 1956 Jasper’s “origin story” was that Carlisle and Esme adopted Jasper after his horrific childhood in an extreme cult.
Edward once spent 6 hours learning the cool dances of the 60s from Jasper but Jasper accidentally taught him the dances of the 1860s not the 1960s and Eddie looked like an idiot when he went to the prom and tried to fit in
Jane totally called Aro dad and Aro LOVED it much to Jane’s mortification.