it designates about people who
hav a big or even massive forehead. like me, some other people and
definetly gordon ramsay. you can turn the term, 'massive forehead' into many different phrases too....some are mentioned below.
'i have a massive forehead'.
'do you have a massive forehead'.
'that
forehead is so big, you could land a
plane on that thing'.
'suck my forehead'.
'use that forehead'.