simple past tense and past participle of play into someone's hands

present participle of play into someone's hands

Third-person singular simple present indicative form of play into someone's hands

(idiomatic) Lacking dexterity in either hand; being ambilevous / Used other than figuratively or idiomatically: see two, left, hands.

Not up to someone anymore.

Third-person singular simple present indicative form of sit on one's hands

present participle of sit on one's hands

simple past tense and past participle of sit on one's hands

plural of hand in the cookie jar

One should not attempt to take on more than one can handle.