Daily idiom: have someone pegged

Won't this be reminiscent of "pegging" and causing a bad misunderstanding?

This is all hilariously inappropriate. Pegging is when a woman uses a strap-on dildo on a man.

This is a perfectly normal phrase. Yes there’s possible innuendo - like saying “I’m wet” or “she’s strapping” - but it’s easily understandable with context clues. It’s not wildly uncommon and most people wouldn’t bat an eye if they heard it.

It's a bit uncommon, but is certainly in use and a nice word to use if you want to expand you vocabulary. Your understanding is correct, I think you can mostly ignore the other definition of this word as it should always be obvious which one you mean. But in casual conversation I would probably intentionally misinterpret this word because I'm immature like that. E.g. Someone: "Yea I've got him pegged as a bit of an introvert" Me: "yea you do" Someone: "this is why no one talks to you anymore"

Often in the non vulgar usage it's "pegged for" or "pegged as" something like "I didn't have you pegged for a golfer" (I didn't expect you to play golf)  It could be used on its own, like in the end credits to Frasier: And maybe I seen confused, yeah maybe, but I got you pegged  Where Frasier has a call in advice show and he's saying he has figured out your issues 

It's a bit old-fashioned, but still common usage. It means 'defined'. In my experience, in American english it is usually used as a statement of subjective perspective: "I had John pegged as a Libertarian, but he is a Republican." "Here you go," he said, sliding the glass down the bar to me. "I had you pegged as a beer drinker the moment I set eyes on you." "Wow! Look at Jenny on the dance floor! I had her pegged as a shy, stay-at-home kind of girl, but she is a party animal!" It is rare to see the term used otherwise unless it is to clarify someone else's subjective take: "Jack pegged Larry as a thief long before any of us realized it." "Aiko had pegged Ng as a womanizer, but nothing could be further from the truth." Of course there's a world of difference between, "I had John pegged," and, "I pegged John."

Since no one’s mentioned the whole currency thing yet, I’ve seen this word mostly used for: 1. The sexual innuendo. 2. A currency pegged to the Dollar. 3. This idiom, though I’d usually use pinned instead of pegged. 1 and 2 are slightly more frequently used though.

Maybe I'm immature, or have the wrong group of friends, but I'm gonna hazzard a guess and suggest people to avoid using this term if you're not already friends with the person you're talking to. To avoid embarrassment, at the very least

Why is my mind like this? 🥲

This word has recently taken on a new meaning and I would recommend avoiding using it!

This is one of those idioms that is familiar to me in my 30s but will not exist for upcoming generations because of the new sexual meaning.

Because of the modern sexually-charged slang meaning, I would recommend not using this anymore. Definitely keep it in the passive vocabulary, but yeah…

You are correct, but this can be mistaken for a sexual innuendo. Although, I personally wouldn’t see it that way, unless you were intentionally trying to be dirty.

i’ve never heard this before and i guarantee most english speakers (of a certain generation) will think about what i just thought about at first.

I wish someone would know me well