this happens to me in regards to certain things. This might sound like a weird example but it's the only one I can think of right now. Me and my friends have been on a whiskey sour kick lately and i had never drank them before a couple weeks ago and none of my friends ever drank whiskey sours. So I go to the bar to meet up with a completely separate group of friends apart from the ones I mentioned previously and when I get there I ask one of my best friends "What you drinkin on?" and he's like "Whiskey sour, they're 3$!"
the basic theme is that I'll discover something for the first time and then within days it somehow appears in other places. I really wish I could think of some other examples but it's one of those novelties where you'll go "thats a weird coincidence" and then you'll forget about it. It seems very similar to deja vu.