Foot warts. Foot warts are called plantar warts because the word plantar is the medical term for the sole of the foot, the area where the wart usually appears as a single lesion or as a cluster. Plantar warts, however, do not stick up above the surface like common warts.
Hot n Cold is a song by American singer Katy Perry. The song was written by Perry, Dr. Luke and Max Martin and produced by Dr. Luke and Benny Blanco for her second studio album, One of the Boys (2008). The track was released as the album's second single on September 9, 2008.
Host Christopher Lee introduced the segment as being not for the squeamish. The song was later sampled by Scott Brown in the song Ice Cold 2. It was also sampled by M.O.P. in their song Cold as Ice from the Warriorz album. It is featured in the video game Rock Band 3. American rapper and producer Kanye West used a sample of the record as part of an intro for his song  Cold  during his set at the Glastonbury Festival 2015.