Cristina opened the door to Meredith's bedroom and folded her arms over her chest.
"Am I interrupting sex?" she asked.
"No," Derek groaned.
"Good," Cristina replied. "Get out."
"What? You can't ask me to leave," Derek said.
"Meredith."
Meredith looked at her friend, then at her boyfriend. "Give us a second."
Derek leaned over and kissed her, before climbing off the bed.
"When I get back, there better be sex."