Based on this prompt from an Anon on Tumblr: Olicity undercover and Felicity saving Oliver
I suppose I bent the rules a little bit here, but I wrote a scene like this for "White Lies" already and wanted to do something a little different.
"Told you so," Felicity says smugly as they run down the hall, her slightly behind because the long train of her dress is slowing her down.
"I know," Oliver says through gritted teeth, but she goes on, waving her arms angrily as her voice rises.
"'I'll look too bulky,' you said. 'People will know I'm wearing something under my suit,' you said. 'What are the chances anyone will even shoot at me?'" she finishes. "Well, looks like there was a 100% chance," she says and pokes a finger at the holes in his shirt where the bullets hit his vest.
Suddenly, Oliver grabs her and drags her through an open door off the hall, slamming her back against the wall next to the door.
"Hey!" Felicity starts, but he shushes her, pressing his index finger to her lips. Her eyes widen in surprise a moment before he removes his hand and protectively braces himself over her on the wall, pressing against her. It's silent a moment and then the sound of footsteps and guards yelling goes by. They stay that way until the sound fades and then Oliver steps back.
Felicity fidgets a moment, eyes downturned before she finally looks at him and speaks. "You really are bulkier with that vest," she mutters awkwardly.
Oliver grabs her hand and leads her out of the room. He manages not to smile until he's turned away from her.