I need to do some caulking around the house, so went on youtube to find out how. It turns out in the US they pronounce 'caulk' differently to here. Which, being very childish, made me laugh an awful lot:
https://www.youtube.com/watch?v=xzPit2Jf1zg
https://www.youtube.com/watch?v=xzPit2Jf1zg