box jumper
n.β Β«I hate enclosed spaces, which people find amazing because in illusions Iβm pushing other people into boxes or tight little spaces. People who get into those contraptions are called box jumpers and thatβs something that I could never doβbecause of my phobia and my size. Box jumpers need to be very thin and agile.Β» ββInterview: Paul McEneaneyβThe Magic Of It” by Gail Walker Belfast Telegraph (Northern Ireland) May 5, 2007. (source: Double-Tongued Dictionary)