Where to keep your tuner

I story I heard backstage the other day:

"A trumpet player got their mouthpiece stuck inside the bell for a couple of days once!"

"Wow, I always wondered if that could happen! How long was it in there?"

"Just a day or two. I knew a trombone player who got a tuner stuck inside his bell for a week though!"

"Whoa! Did he play more in tune?"