where does the term cherry picker come from
Cherry picking The term is based on the perceived process of harvesting fruit, such as cherries. The picker would be expected to only select the ripest and healthiest fruits. An observer who only sees the selected fruit may thus wrongly conclude that most, or even all, of the tree's fruit is in a likewise good condition. This can also give a false impression of the quality of the fruit (since it is only a sample and is not a representative sample).
Gratuity According to the Oxford English Dictionary, the word "tip" originated as a slang term and its etymology is unclear. According to the Online Etymology Dictionary, the meaning "give a small present of money" began around 1600, and the meaning "give a gratuity to" is first attested in 1706.[9] The noun in this sense is from 1755. The term in the sense of "to give a gratuity" first appeared in the 18th century. It derived from an earlier sense of tip, meaning "to give; to hand, pass", which originated in the rogues' cant in the 17th century. This sense may have derived from the 16th-century "tip" meaning "to strike or hit smartly but lightly" (which may have derived from the Low German tippen, "to tap") but this derivation is "very uncertain".[10] The word "tip" was first used as a verb in 1707 in George Farquhar's play The Beaux' Stratagem. Farquhar used the term after it had been "used in criminal circles as a word meant to imply the unnecessary and gratuitous gifting of something somewhat taboo, like a joke, or a sure bet, or illicit money exchanges."[11]