I was with married friends in their car a couple of weeks ago and there was a mild (!!) bit of tension between them. We stopped somewhere and when he got out, she half-seriously wondered why they were still married. A while later, we stopped for fuel and while he was filling up, she pointed to one of the offers advertised above the fuel pump for a selfie stick for "only" £6.99 or something. We took the piss out of them and then he suddenly tapped on the window, pointed to the advert and mouth "why, why, why?". We laughed and I pointed out that this is probably why they were still married, despite everything.