
1) Boy Scouts do this 2) Contortionist 3) Get hitched 4) Get married 5) Marry 6) Third step
Found on
https://www.crosswordclues.com/clue/tie-the-knot

Tie the Knot (foaled 1994 - Died October 2012) was an Australian-bred Thoroughbred racehorse who won 13 Group One races. In 1999-2000, he was voted Australian Champion Stayer. ==Breeding== Tie the Knot was a chestnut gelding sired by Nassipour (USA) from Whisked by Whiskey Road (USA). Nassipour was also the sire of Let`s Elope (NZ), who won the M....
Found on
http://en.wikipedia.org/wiki/Tie_the_Knot
No exact match found.