Take their ‘joke’ seriously and buy them each their own vibrator/dildo combo. Be really serious about the whole thing; explain what they are, what they’re for, everything.
This way, if they weren’t joking, your veggies are safe. If they were joking, you have just completely topped their joke with your own.
Very neat.
It’s also nice to have a reminder about choosing hardware for now and for future choices as well. I’m still on an nvidia 1080 but I’ll likely use amd next go around.