DD is hating every single sippy cup I am placing in front of her, and we've tried a wide variety (read: pretty much every cup on amazon). The Doidy is great buy not practical for when we are out and about. Everyone raves about the basic TT sippy with the handles so I got one but I'm really struggling to open the bloody thing. Even DH struggles with it. Am I just being useless/weak, or is there some trick to it... Or have we got a defective one? I feel so daft asking how to open a cup!