Their first full-length album, "The Wonder Years", was released the following week with "Tell Me" as the lead single. Due to the last-minute addition of Yubin, the album version does not contain her part. However, the performance version of the song was reworked to include a bridge with rapping by Yubin. The single was a hit and reached number one on various Korean television and internet music charts, including KBS's "Music Bank". The song also became a number one hit in Thailand. The choreography for the song was simple and widely imitated: by October, many fan performances of the dance circulated on video sharing sites such as YouTube and Daum, including one by a group of policemen who were eventually profiled on SBS's "Star King". The dance's popularity it received became widely known as the "Tell Me Virus". The Wonder Girls had an extensive promotional schedule for their album, and in late 2007 they began performing their second single, "이 바보" ("This Fool"). MTV also began broadcasting "The Wonder Life", a reality TV series starring the girls.