Oh how annoying, cleaning your glasses every five minutes due to litte fingerprints

We had this issue as well & it just takes a little time & consistency. The first time I woud say no & move his hand away, explaining that he's not allowed to touch mummy's glasses. The second time I would do the same but adding on, if you touch mumy's glasses again you will have to go on the floor. The third time he would go on the floor. Nine times out of ten it would cause a tantrum & I would get down on the floor & explain, "mummy told you not to touch her glasses & that you would have to go on the floor if you did it again didn't she?" When he calms down then you can pick him up again, I wouldn't do it during the tantrum because he'll just think he can cry to get what he wants.

The next problem is, do you warn him before you pick him up, "please don't touch mummy's glasses or I will have to put you on the floor." Or will that give him the idea LOL! strugged with that one & decided it wasn't worth it cos it would remind him before he had the chance to think about it himself! After a few times it got to the point where he was reaching for them & I would just have to say "Aah. What happens if you touch mummy's glasses?" and he would stop.

Just stay consistent & he will get the message