Comes from the childrens nursery rhyme:
Number 1, tickle my bum
Number 2, do a big poo
Number 3, go for a wee
Number 1, tickle my bum
Number 2, do a big poo
Number 3, go for a wee
by Kellygirl March 28, 2012

by Jazpur September 5, 2011

The act of making thick in the warm / doing sex on a lady / putting your choo choo train in a womans tunnel
by ToppingPilot20 November 7, 2020

by Goofnut January 8, 2022

by Stias September 5, 2005

by Gerry McGee April 8, 2008

by MarshoT December 1, 2009
