scratch someone's back

Help expecting return

To scratch someone's back is to do them a favor, usually with the expectation of reciprocity.

The expression comes from the longer you scratch my back, I'll scratch yours—mutual assistance between parties who each have something the other wants.

The phrase often implies transactional relationships or mild corruption: The contractor scratched the inspector's back with tickets to the game.

Related

do me a favor · mutualism · tit for tat · good turn · payback · teamwork · obligation · IOU · exchange · partnership · return the favor · symbiosis · barter · cronyism · palm greasing · alliance · trade-off · shared interest

Opposites
reciprocal help vs. harm

scratch someone's backbetray

Violate a trust

backstab · double-cross · throw under the bus · undermine · sabotage

mutual benefit vs. self-interest at others' expense

scratch someone's backlook out for number one

Favor your own interests

take advantage of · exploit · freeload · burn bridges · one-way street

favoritism/quid pro quo vs. principled fairness

scratch someone's backplay by the rules

Follow accepted procedures

Family

scratch, scratched, scratching, scratches, scratcher, backed, backing, backer

Familiarity
Top 100,000
Profile
Known to kids · Used worldwide · Timeless · Positive · Everyday, not technical · Rated G