Anime Humor Guide
Performing unlikely actions, such as flying across the screen.

Head vein – pops up in corner of head when character is extremely agitated.

Nosebleeds – occur only in males who think bad thoughts about girls however I like to nosebleed and I'm a girl....and I don't think they use nosebleeds in FY.

Falling over – done when characters are particularly shocked or exasperated.
Normal Tasuki vs. Chibi or SD Tasuki
(normal Subaru vs. Chibi Subaru)
Super-deformation of characters (SD)- makes them look young and act childish or changing into animals.  Also known as chibi form (child) or neko (cat) or whatever they turn into..
Sweat bead – appear on side of head when character is exasperated, annoyed or worried.
Nuriko and Tasuki getting in trouble
(Tsubasa and Subaru getting in trouble!)

Growing - Sometimes angry characters grow to immense size when they yell, and sprout fangs.
Nuriko causing Tamahome to go deaf
(Tsubasa causing Yamapi to go deaf!)
Mallets - come from nowhere and used to bop annoying characters on the head.  Fushigi Yuugi uses bopping by elbow instead of mallets...
Tamahome bopping Nuriko
(Yamapi bopping Tsubasa!)