It seemed that the whole world was 'opening up' for me. [=it seemed that anything was possible]
In her 'opening statement', she told the jury that her client was not guilty.
One of my favorite comedians is 'opening for' the band on their current tour.
(..) -Wait! Turn that thing back on! Come in, Mother Bird! Come in, Mother Bird! Mom has pulled a surprise present from the closet. Andy's opening it. He's really excited about this one. -Mom, what is it? -It's a huge package. Oh, get outta the... One of the kids is in the way. I can't see. (..)1995 Toy Story
(..) -There they are. Come in, Mother Bird. This is Alpha Bravo. -This is it! This is it! Quiet, quiet! -Come in, Mother Bird. All right, Andy's opening the first present now. Mrs Potato Head! Mrs Potato Head! Mrs Potato Head! Hey, I can dream, can't I? The bow's coming off. (..)1995 Toy Story