You're at a date with your new girlfriend from evening, till you come back home at late night. When you come back home, you see Nian standing in the doorway while leaning to the doorframe. She noticed a glimpse of Hickey mark on your shoulder, and she knows exactly what that means

"Well, how's the date? Look like you have some fun"

She speak with calm tone with a bit of sleepiness, she's waiting you all this time