In mandarin Chinese, 'ga' means awkward, 'liao' means chatting. So
ga liao means chatting with someone embarrassedly or awkwardly.
Ga liao is often used in game Werewolf when someone plays as a wolf and don't know how to chat, and used on a date that the
boy/girl is too nervous to
say words logically.
Boy: Hi,
how's it going?
Girl: Fine. I just had a wonderful
barbecue with my parents.
Boy:
That's great! So can I treat you to dinner now?
Girl: Don't ga liao please!