to (one's) bootstraps
Through and through; thoroughly; in every manner or respect. The fellow is stubborn to his bootstraps; he won't even listen to my plan the whole way through! Though he grew up in America, Henry is still a Brit to his bootstraps.
to your bootstraps
AUSTRALIANIf someone has a particular characteristic to their bootstraps, that characteristic is very strong in them. Note: Bootstraps are straps attached to a boot which you use for pulling it on. The novel's hero is honourable to his bootstraps. Sir Robert Menzies was British to the bootstraps.