if you know what's good for you

Fig. if you know what will be to your benefit; if you know what will keep you out of trouble. Mary: I see that Jane has put a big dent in her car. Sue: You'll keep quiet about that if you know what's good for you. Sally: My teacher told me I had better improve my spelling. Bill: If you know what's good for you, you'd better do it too.

Common Names:

Name	Pronounced	Usage
Agapetus	-	Ancient Greek (Latinized)
Antonio	ahn-TO-nyo (Spanish, Italian)	Spanish, Italian, Croatian
Billings	['bliŋz]
Yuko	yoo-ko	Japanese
Burris	['bʌris]
Baal	BAY-əl (English), BAYL (English)	Near Eastern Mythology