DH and I both in our 30s with 2 children together 10 years so it's a mature relationship.
However we like to mess around with each other at times I'll maybe punch his arm in a jokey way and he'll punch mine back sometimes this can lead to a fake sparring match with a dead arm or dead leg.. all fun and games we both find it funny and it's just a goofy thing we do. Recently a friend of mine was by and she seen me punch his arm as a joke in the kitchen (he was in my way and I was basically saying move it) he punched mine back we laughed that was the end of it. After my husband left my friend said she couldn't believe it and after we talked about it and she understood it's all fun and games to us she was like I just find it weird as he's hitting you back. My sister has commented on it once as well at the start of our relationship more just like "what are you like"
I guess what I'm asking is, we're not the only ones are we? Are there others out there who do this?