Vibrator😢

So I’m 19 and for a year or so I’ve been getting off with this vibrating massager thing but it’s running out of life and I can’t get it open.

I was recently online looking at some and I found some in a sale for really cheap and I really want to get it. It says it comes in plain packaging but I’m still really scared to buy it cause everyone in my fam will be like ooooh what did you buy!?

Idk what to. Can someone plz help haha