Here’s a pro-tip from someone who once wore a toothpaste moustache to a meeting: Keep your mouth closed when you brush. Sounds obvious, but 99% of toothpaste drips happen when you’re talking to your reflection or humming a song.
Also, try bending over the sink slightly while brushing. Gravity works against you if you stand straight up. A 30-degree forward tilt can save you three minutes of stain removal.
Lastly, keep a tiny spray bottle of diluted laundry detergent next to your bathroom sink. One spritz, a quick rub, and a rinse—and your clothes are safe before you even finish your coffee.