@Sir_Boops i mean that's mostly because the air's actually warm when it's expelled but because of how FAST the air's moving when you purse your lips it causes any micro droplets of moisture on the skin to evaporate and strips heat off from the surface you're blowing on as a result making it feel "cold". When you're exhaling with a wide open mouth the air is moving relatively slowly so it collects around the surface and thus warms it up with the humidity in your breath.
A general friendly, up to date, secure instance that trends toward topics of tech, games, and
✔️ Up since November 19, 2017 Current Up-Time
✔️ Onion federation support
✔️ I2P federation support
If you're new to Mastodon checkout this guide for some tips!
More about this instance