Question: what to say when someone is having a good day?
Answer: 01“Have a rock 'n roll day.” Rock 'n roll is a genre of music that is all about having fun and expressing yourself. ... 
02“Peace out!” ... 
03“Don't overdo it!” ... 
04“Hasta mañana.” ... 
05“No wild parties while I'm gone, mister!” ... 
06“So long!” ... 
07“G'day, mate.” ... 
08“Asalam walekum.”