ดอกฟ้ากับหมาวัด

Etymology
From 🇰🇲; literally "heaven's flower and temple's dog".

Noun

 * 1)  persons that do not seem suiting each other as romantic lovers because of their greatly different social standings.

Usage notes

 * Heaven's flower is often used to refer to a woman (who is from a high social class); and temple's dog, a man (from a low social class).