And yes...I also suffered...and still do...being tongue-tied.
The workarounds are simply to conscientiously slow down and speak more slowly.
Thats kind of why I love posting here...it allows you time to organize your thoughts.
Especially about pronouncing Worcestershire sauce!
The best vocal exercise is the epiglottal plosive or stop involving closure by the aryepiglottic pharyngeal stricture mechanism.
Quickly repeat "he bumped it, he bumped it, he bumped it".
Do it now.
You know you want to.
ps. Went to the fridge to check the ingredients in the wooz ta sher sorse and stood there with the door open wondering what thefsm was I doing in the fridge.