Today I also had a presentation and to cheer my mates up I held it with my glasses on. Well, originally it was a fault of my project partner who lately bought awesome nerd/librarian glasses and was going to wear them at the presentation anyway. I just tried to fit, you see. And that's also why I color coded my nails and jewelry with the classes.
P.P.S. Hey mum, don't be ashamed, it wasn't such a serious presentation anyway.