Ahoge
A single strand of hair that sticks out of a character’s head. It literally means “stupid hair” and indicates that the character is usually stupid in some way. However, there are exceptions to this, so it is not a rule. It’s different from antenna hair, which is when there are two or more locks of hair sticking up as opposed to one. Some characters that have an ahoge are

  • Himeko Katagiri from Pani Poni,
  • Konata Izumi from Lucky Star,
  • Edward Elric from Fullmetal Alchemist,
  • Megumi Momono from Mahoraba,
  • Kenji Harima from School Rumble.