Bucky and Steve are in the living room and talk to each other about something important and Steve looks at Bucky with a slight serious expression.

"What was rule number one, Bucky?" he asked with a neutral but also with a slight serious voice.

Bucky looks at Steve as he sits on the couch and is a bit uninterested.

"don't sleep with your sister..." he pauses for a second "which I may already broken."

"You did what?!" Steve yelled. "I'm sorry I couldn't help it your sister is hot Stevie"