Caramelldansen

Caramelldansen is a Swedish pop song and a memetic video by the same name. The famous fan video utilized a looping animation from the intro of the adult game Popotan, featuring two female characters waving their hands above their heads in an unusual, repetitive dance, which was set to the song Caramelldansen.

Many imitators followed this, creating their own original animations featuring characters from various works doing the same dance to the song. On websites which allowed users to have animated avatars, many users would even use Caramelldansen gifs as their icons. The animated series Phineas and Ferb referenced the trend in its "Summer Belongs To You" special, where the musical sequence "J-Pop (Welcome To Tokyo)" depicted the characters doing this dance.