Weird link to my approximate location embedded in text in facebook messenger..Why? How??

[Confused_Poirsun]

I want to know how my friend somehow accidentally managed, halfway through typing a message to me, have it underlined, in which the underlined part of the text turned out to be a link to google maps, revealing an approximation of my location (was about 10 miles out). The first words in the underlined bit of text was, "one part". I don't know if they're a keywords or something? I couldn't reproduce it.

I'm assuming it's some kind of Gboard function, for sending quick hyperlinks with location request or something embedded in the text?

I'm so confused. Does this make sense to anyone? And if so, does anyone have any idea how to do it?

Thanks.