I can whistle in three different ways. The classic pursed lip whistle, a whistle using just the tip of my tongue and the roof of my mouth, not using my lips at all, and then another using the tops of my bottom teeth. I can make decent bird sounds using my bottom teeth, but I can do pretty much any tune I can think of with the pursed lip method. It has been relevant to my life exactly zero times, except to entertain myself.
Ah! I have another whistling method! I can use my throat. It's like a heavily modified sigh? It's the best way I can describe how to even try to do it.
With practice I think I could get it loud enough to be disorientating to the unsuspecting though. Lol
Ha! I haven't heard of that, but maybe I should try to learn it just to know more ways. Not that I'm doing much with the ones I do know at the moment, lol
I've got a tooth gap through which I can whistle. And it's working so well, that I can also audibly whistle while breathing in. So, I can actually whistle pretty much continuously for like 10+ minutes, until my cheeks start hurting. Only really useful getting on someone's nerves...
That's how I learned the bottom tooth whistle! One of my bottom front teeth was a bit crooked and created a tiny gap at the top, and I learned to whistle through it. When I got my teeth straightened I lost the ability to do the invert whistle and some of my control but I can still do it well enough with the pursed lip method.
I can bring my hands from the back of my body to the front (and the opposite) while holding them together. There might be a use for this if I ever get tied up.
I can fold my ears twice - so from the top of my ear I fold it towards the bottom of my ear and at the point where it folds I can fold it again across over the first fold.
This is my time to shine, my body is full of useless, I can:
gleek intentionally (saving people a search: it’s causing the salivary glands under your tongue to shoot saliva, people often do it unintentionally when yawning)
open my jaw wide enough that it goes out of socket, and twofer I can then move it side to side and produce a loud popping noise
bend my thumb down to my wrist
cause my heart rate to spike for short periods even when at rest
I can also gleek but it's nowhere near what my grade 11 English teacher could do. I don't know how it came up in class, but, in front of the class, she turned sideways and made the biggest arc I'd ever seen: maybe 6 feet long
I remember when I was a kid we were all trying to gleek and some of us could do it easily. I never could, so anytime as an adult I accidentally do it, I can’t help but laugh.
If I press on the corners of my eye it forces air down my naso-lacrimal duct (that lets tears drain into our sinuses) and it makes a squeak loud enough for people sitting next to be to hear. I have a built in nose flute.
Sometimes when I open my mouth really wide, I somehow spray a little stream of saliva, like from a squirt gun. It makes me feel like the dilophosaurus in Jurassic Park, but so far I haven't been able to do it on purpose.
I can hammer nails and icepicks into my head. I'm very fire resistant and eat fire. I have a split tongue. I can keep my eyes open for a VERY long time.
TBF I'm a sideshow and fire performer so I'm cheating