Can you keep Kegel Exercisers in for long periods?

Insightful breakdown of Ben wa balls:

Erotic ball play
Sometimes during foreplay my girlfriend likes to press her kneecap into my balls. She adds a little weight to it. Its kind of a erotic pleasure pain

I cant find heavy enough Ben Wa Balls
Everywhere I look in my city I can't find ones which are small and heavy enough for me. Even though I was hesitant to buy online because I can't...

Cure for "Blue Balls"
Whats your vote, feel free to leave comments.

Do you use Kegel Balls?
Do you use them...for what uses?

I have a Kegels question...
I recently read that kegel exercises can help ease childbirth and prevent the incontinence that can happen with pregnancy. I'm 19 weeks pregnant and..