The beautiful glasses in your hands have been through a lot in their lives. They were passed from hand to hand and even thrown in the trash!
It's time for them to receive some real love, from you. SO:
1.- First of all, don't forget to wash them before using them
Even if they've been washed before, they were touched afterwards, so it's always better.
2.- Handle them with care
I mean, they're glasses!, and they're made of glass, so they shouldn't be thrown in the air, used as a ball, stepped on, well, you know the rest.
3.- Be very careful when washing them
We've all experienced that horrible moment when we're washing a glass and it slips out of our hands and breaks...
So, if you wash them with your hands, you have to caress them and, if you want, you can even sing them a song!
However, if you want to put them in the dishwasher, you can also do it, but consider that eventually, over time, the images might start to fade.