Microsoft Paint is a program where you create pictures. It is often used in YouTube Poops, and can create odd pictures. Depending on how you use it, poops using it can either be very good or very bad. Most poopers are not good at drawing (or just decent), so the video quality quickly drops. However, if you are very good at making pictures with M Paint, you can actually make really great poops. Most poop programs have a built-in picture thing, so you can use that instead for poop.
Erases things. You can choose the size.
Draw a custom line or curve.
Draw over an area to either copy, cut, move, or crop. Either in rectangle or freeform mode.
Choose a shape: ellipse (circle or oval), quadrilateral (square or rectangle), or custom shape.
Draw a line or a curve.
Create a bunch of concentrated dots.
Type something in it.
Fill an area with color.
Create it to look like paintings, or create dots or squares.
Look more closely (or further away) at a picture.
Stretch or grow the picture.