Wavy Mouth
Know what I mean. The classic squiggly line anime characters get when nervous, confused, or awkward. It usually looks like a 3 or tilde on their face. You see it often in comedies and slice-of-life shows when characters can not handle a silly situation. One of those unique visual cues that makes anime expressions fun and easy to understand.
Illustrators add a wavy mouth to make illustrations look happier immediately. Usually paired with big blank dots for eyes, huge drops of sweat, or a light blush to show how awkward it is. There are many great fanart images of a serious character surprised and with a goofy squiggly expression. Suitable for full-size character portraits and cute chibi designs. A tiny squiggle of someone trying not to laugh is sometimes hard to see. Sometimes it completely covers their face in cartoonish panic.
A piece of art with this expression in the background can add humor to your daily life. Turning on your screen and seeing your favorite character confused makes you smile. These wallpapers let you show off anime's silly side and give your desktop a fun, relaxed vibe.