Barbara Gordon / Natasha Romanoff
Generally, Natasha preferred to be a person who was taken seriously. Despite the fact that there was nothing she was truly uncomfortable with, she did have a certain degree of dignity, and she liked to be able to maintain that. Especially in situations like this one: new environment, new people, and she hadn't actually been here for that long, considering. It had only been a few weeks and most of the time she'd been here - well, her vision had been a little myopic, she'd talked to a lot of people but most of her hours had been dedicated to Tony and Carol, Clint and James, Steve and Thor. She'd been focused on showing up old bonds, breaking news, repairing cracks and exploring possibilities.
But she wanted to get to know people outside her own small motley crew. That would eventually be important; they were all sharing a community, resources, knowledge. It mattered to build bridges.
So yes - dignity, under most circumstances, was what Natasha would have chosen. But it seemed incredibly important to Carol that she do something obscene to the dick cake for the pleasure of hanging a Polaroid on the wall and, well, Carol meant a lot to her. Carol had opened up her home when Natasha knew full well that wasn't the most natural thing in the world for her. She could do one stupid and dumb thing for no reason other than it delighted Carol. (Probably Clint too, honestly.)
Of course after that, she had to walk over and face Barbara, who she'd been meaning to speak to about their book plans, anyway. "It's Barbara, right?" she said as she headed over. "I'm Natasha. From the library discussion." She glanced down at the plate in her hands and then back up. "My friend Carol and my - Clint. Are bad influences. I'm normally more of an adult, but - nice to meet you officially?"