Yo I swear if I met Shawn and I leave and go home and find out Shawn ACCIDENTALLY TOOK PICTURES OF HIMSELF ON MY PHONE?! I'd really die like I got me some exclusive photos! I'd cherish it. I'd make it my lockscreen. I'd tell the world. Hell, I'll put it in my will!
Highlight of my life, Shawn Mendes taking pictures of himself on my phone.
Like that's the best possible thing that could happen at a meet and greet (realistically).