scratch someone's back

Do someone a favor in hopes that a favor will be returned. For example, I don't mind driving this time-she's scratched my back plenty of times. It also is put as you scratch my back and I'll scratch yours, as in If you do the laundry I'll do the cooking-you scratch my back and I'll scratch yours. This idiom was first recorded in 1704.

Common Names:

Name	Pronounced	Usage
Aias	ie-ahs (Ancient Greek)	Greek Mythology
MikoŁAj	mee-KAW-way	Polish
Lihi	-	Hebrew
Aleksei	ah-lyek-SYAY (Russian), ah-leek-SYAY (Russian)	Russian, Ukrainian, Belarusian
Samara	-	English (Modern)
Patten	['pætn]