elephant walk

noun2

1. •
   (US) The taxiing of multiple aircraft in close formation before a mass take-off.
2. •
   (slang) A men's hazing ritual in which the men walk with each one holding the penis of the man behind him and with his thumb in the anus of the man in front of him.

   • […] which the players moved in a line while gripping the genitalia of those in front of them similar to an "elephant walk". — 2012