system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How is it that, seemingly every time I drink out of a mug, a small drop of the liquid within manages to avoid my mouth?

Edit: For reference, the liquid I was drinking at the time of asking was tea.
gpt
Capillary action.

Surface tension of your liquid is broken by your lips, or you'd never get any of the liquid in your mouth. The liquid now has access to your skin, and the forces of capillary action causes it to travel along the connection between your lips and the mug, and find it's way down your cheek. Pressing the mug more tightly against your face only gives more liquid an opportunity to follow suit. So, don't tilt the mug as much, or wait until it's a little cooler to drink, and use a straw. Or sip noisily.