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Ppa-ppa-ppa (pronounced like "pah-pah-pah," with a slightly sharper 'p' sound at the beginning of each syllable than a typical English 'p')

The 'Ppappappa' meme by Crayon Pop began to gain significant popularity after its music release on June 20, 2013. It became particularly popular from the latter half of 2013 until the following year, along with the 'Straight-5 Engine Dance'. After being introduced on KBS's 'Yoo Hee-yeol's Sketchbook' on July 12, 2013, it rapidly gained traction, climbing back up the music charts. It even set an unusual record by reaching #1 on Melon's real-time music chart just 44 days after its release.

The 'Ppappappa' meme originated from the girl group Crayon Pop's song of the same name and its unique choreography, the 'Straight-5 Engine Dance'. The distinctive outfits, combining helmets, tracksuits, and skirts, along with the five members alternately jumping in a line, resembled the movement of a car's 5-cylinder engine, earning it the nickname 'Straight-5 Engine Dance'. Initially, many reacted with "byeongmat" (a term for something absurdly bad but strangely appealing), but the combination of its addictive melody and unique choreography led to it being praised as "initially absurd, then addictive" (선병맛 후중독), gaining immense popularity. The 'Jangpung Dance' (Hadouken Dance) and 'Gaedari Dance' (Dog Leg Dance) also became popular alongside it.

The 'Ppappappa' meme was widely loved, to the extent that not only the general public but also other celebrities parodied it. It was a staple song for group dances at school festivals, OTs (Orientation Training), MTs (Membership Training), and was frequently used as a congratulatory song at weddings, bringing laughter to guests. It gained popularity across various age groups, even coining the neologism 'Popjeossi' to refer to middle-aged male fans who supported Crayon Pop. It can be said to be a meme widely consumed by all generations, both male and female.

'Ppappappa' was parodied in various forms. Taiwanese twins Johnny & Yoni gained popularity with 'Ppappappa' and even released their own song. A video using Jang Geon-woong's 'Ttanggwangttangppang' was also produced. Farmers English commercials also adapted and used the song. Furthermore, because it was easy to imitate with just a helmet and white gloves, it was often used as a group dance for wedding congratulatory performances and various events.

The 'Straight-5 Engine Dance' is a choreography that requires multiple people to jump together in sync. If the movements are out of sync due to a lack of coordination, it was sometimes referred to as a 'broken 5-cylinder engine'. Therefore, when performing the dance as a group, sufficient practice and teamwork are essential.