What do you think about me telling my significant other that I disliked a gift?
Why wouldn't you like the gift?
I don't like to be told what gifts I like.
It's good to let your partner know what you like, but you shouldn't be ungrateful for any gifts you've already received. This could cause your SO to feel as if they aren't appreciated or valued.
I'm not obligated to like any gift. It's my right to like or dislike the gift.
You should be honest and tell them you didn't like the gift, but you should also be grateful to receive gifts at all. It is a thin line between being ungrateful and being honest, so make sure not to cross it or else you'll hurt your SOs feelings.