scratch someone's back (English, verb)
expansion: scratch someone's back (third-person singular simple present scratches someone's back, present participle scratching someone's back, simple past and past participle scratched someone's back)
Senses:
glosses: To do someone a favour.
tags: informal
Forms:
form: scratches someone's back
tags: present
singular
third-person
form: scratching someone's back
tags: participle
present
form: scratched someone's back
tags: participle
past
form: scratched someone's back
tags: past