fill your boots 

An invitation to partake with gusto, as in "be my guest," or "help yourself."

Here's one for you to chomp on, fill your boots

fill your boots by Full Boots May 1, 2005

Fill your boots 

1. Invite another to help themselves to their optimal capacity or
2. Attempt a difficult task or ordeal.

1. HE: Are these sweets free?
SHE: Fill your boots.

2. HE: I'm going over there to crack on to Naomi Campbell!
SHE: Fill your boots!

Fill your boots by dean shannon March 9, 2007

fill your boots 

an invitation to eat as much of whatever is offered as you want and take some home with you. the phrase may come from a time when inviting travelers into your home to share a meal was more common. it was considered polite to eat your fill but not to also fill your bag with food for later. the invitation to "fill your boots" would be permission from the host to do so.

host: there is more here than we can all eat now, feel free to fill your boots.
guest: thanks mister, that's generous of you.

fill your boots by no one of importance June 22, 2012