Same here. We're nudists and my wife walks around naked a lot. When she walks past me I never miss an opportunity to grab or slap an ass cheek; and if I happen to forget, she'll just stand in front of me with her butt in my face until I do it. It's just a cute little routine we have.

Wife in skirts
 

My wife doesn't wear skirts or dresses very often, but whenever she does, I always tell her to take her knickers off in public.

She doesn't usually do it. But she has once :D

A couple of times, as we were leaving the house, I'd just reach up under her skirt and pull her knickers down to her ankles. She usually pulls them back up again, but on one occasion she stepped out of them and left the house to go shopping commando.

Lots of fondling...
 

Mine wears only a short muumuu while in the house; usually no underwear. She bends over several times a day to allow me to reach up under her ass to feel her lips. Or, lets me reach all the way up to fondle a nipple. Then she reaches inside my shorts to check my reaction.

Also, if she does happen to be wearing panties she will remove them on request, so if we're sitting there watching TV my hands have full access.

When we sleep, I grope her bum with one hand, with a finger in her butt. Not deep, just slightly. I keep coconut oil by the bedside to help sometimes.

wife
 

Sometimes my wife will say -boy a hot cup of coffee would be nice now,and I will say so does a blowjob.....
when she is making the bed and bending over it I will slap her ass and say we should get some good use out of that..

For me it's the towel. Whenever she takes a shower she will always come out and get ready with just the towel around her. I can't go past her without lifting it up or pulling it down. Most of the time she gets mad cause she is getting ready but it's impossible to see her that way and not want to be sexual.