Hangover.

The next morning after the failed date, he wakes up with a tremendous backache due to sleeping in an uncomfortable position, half on the couch and half on the floor.
The little table by the couch counts at least 8 empty bottles of soju that he drank on an almost empty stomach.
While throwing the bottles away, the effects of that bad idea trigger and he has to rush to the bathroom, vomiting even his soul a few times.

But since in his mind such thing as 'stay home due to being sick' doesn't actually exist, he takes a shower, wears his usual cheap and comfortable clothes and goes to the club for the usual work he does in it. He is paler than a ghost due to being so sick.
Only while going out of home.he finally realises that he forgot his phone inside TiHao's car, the precious evening. He still feels sad too.

Reached the club, he puts the glasses of the bar in the dishwashers, turns it on and heads to clean the bathrooms first, so that he is close enough, since he still feels nauseous.
Done with the bathrooms, he washes the floors, cleans the tables and the furniture, places the glasses back to their place from the dishwasher and heads out in the street in front of the place, to distribute leaflets to people who walk by, to advertise the club, hoping to attract some customers.