Answer:
Gets rid of bad ones, short and tall. Tightens when used, one size fits all.
Jack and Jill when up the hill jack fell down
My first master has four legs, my second master has two. My first I serve in life, my second I serve in death. Tough I am, yet soft beside. Against ladies cheeks I often reside.
I love to dance and twist and prance. I shake my tail, as away I sail. Wingless I fly into the sky.
A great mysterious place that the bold have been known to journey into.
what is a duck that is in Starbucks?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?