Crossword puzzle clue "something you might have a handle on"

Sounds you might make when I say "Would you rather watch your parents have sex or have your parents watch you have sex?"

Something you might have a handle on

You might have a handle on it

You might have a handle on these

In a rough and clumsy way, as you might handle Leo if you thought he was pointing a gun at your children

You might rate them on their route and they might rate you on you vomited everywhere

You might have one to visit Japan, but you'll need a bunch once you get there

Its driver might have a handle