Guernsey Twatois meaning boring or sleep inducing person. Usually proceeded by the phrase "this will interest you..."
Also means to poo oneself whilst making the sex.
"Chesney" can also be used to describe someone that invents things that have already been invented for example the piano or the E chord on a guitar.
Chesney also referring to 90's popster Chesney Hawkes
"doing a Chesney" - to shit oneself for love
"Ah Chesney" - meaning something is not very interesting.