Mil
 

Well long story short, have had a thing for my mil for 20 years, anyway me and my family were at the beach for a week and she came down for a couple days. At the beach house they have an outside shower, well after a day on the beach she has a shower in the out door one, the whole time talking to me while im waiting my turn. The rest of the fam is upstairs inside. She starts telling me they need more ventalation in there,(its enclosed) but being mildly drunk I didn't get the hint. Then its my turn and she tells me I can leave the door open if I want, which I did, unsure if she got a look or not as I was washing
Well next week the Mil is headed to the beach house (with her husband) and wants me to come along and bring my kids (im off but my wife is working) and she's very adamant I come

Is this a hint or am I reading into it too much?
(Sorry. If it looks weird using my phone)

Hmmm
 

Sounds like she is an exhib/voy at the very least, and maybe more.

Maybe. Be careful. Swinging on more than one branch of the family tree can be hazardous.

I think I'd need a few more details to form an opinion. First of all, the outdoor shower - are you saying you were in the shower with her and she was naked, or were you on the outside and she was talking to you through a wall? Have there been other clues in your 20 year relationship with her? Seen her naked? Does she walk around you in thin nighties with her braless tits swinging? Does she give you long hugs?

Hopefully we get an update buckit, because this sounded HOT!

Personally I'd let it go. Way before I married my wife I had many chances to fuck her older sister and her mother. Both were much younger then and looked decent. Even when young I didn't like the idea of being called a MOTHER FUCKER and worried the SIL would tell her husband and he'd want my wife.
The way I look at it there are many other mothers out there to fuck around with. Leave this one alone.
Also it's odd that it's taken her 20 years to start getting friendly. Maybe just watch her shower and let her see you. But no farther. DRD has the right answer.