Speaking of interesting:
http://www.frogmarch.com/ Bet they're British!

From the etymology online dic.:
Frog-march (1871) originated among London police and referred to their method of moving "a drunken or refractory prisoner" by carrying him face-down between four people, each holding a limb; the connection with frog perhaps being the notion of going along belly-down. By the 1930s, the verb was used in ref. to the much more efficient (but less frog-like) method of getting someone in an arm-behind-the-back hold and hustling him or her along like that.
http://www.etymonline.com/f5etym.htm