Return trip with red thong

I'm a pervert, I stick my wife's thong in to have them tell and propose things, I'm curious about trying it back and forth or doing a blow job. Also, sticking an ex-wife's thong while sucking on it. You guys say this is good or bad? 😋🤭😅😅If you want to suck it and put it in too, that's a versatility that gives me curiosity