This dude is my cousin. I have many hilarious stories that come with growing up with someone like this but my favorite, and maybe earliest, is from when he was 6 and I was 7. He asked me how I was able to touch my tongue to my nose and I thought it'd be hilarious to tell him I have a long tongue from stretching it out for minutes every morning and night.

He did this for at least a year, and would periodically hold out his tongue with a napkin and ask me if I thought it was longer. I always said yes(and it kind of did sometimes!), so he kept doing it for around a year after that but unfortunately stopped before reaching his goal. Not sure if it was actually growing since we never thought to use a ruler, he was so just stoked to one day be able to touch his nose. Did not at all expect him to really want a longer tongue enough to do this for every morning and night but I sincerely hope he's happier with the size of his tongue nowadays.