flip (v.) Look up flip at Dictionary.com
1590s "to fillip, to toss with the thumb," imitative, or perhaps a thinned form of flap, or else a contraction of fillip (q.v.), which also is held to be imitative. Meaning "toss as though with the thumb" is from 1610s. Sense of "get excited" is first recorded 1950; flip (one's) lid "lose one's head, go wild" is from 1950. Meaning "to flip a coin" (to decide something) is by 1879. As a noun by 1690s. Related: Flipped. Flipping (adj.) as euphemism for fucking is British slang first recorded 1911 in D.H. Lawrence. Flip side (of a gramophone record) is by 1949.
flip (n.2) Look up flip at Dictionary.com
sailors' hot drink usually containing beer, brandy and sugar, 1690s, from flip (v.); so called from notion of it being "whipped up" or beaten.
flip (adj.) Look up flip at Dictionary.com
"talkative and disrespectfully smart," see flippant.
flip (n.1) Look up flip at Dictionary.com
1690s, "a flick, a snap;" see flip (v.). In reference to an overturning of the body, probably short for flip-flap (see flip-flop) "somersault in which the performer throws himself over on hands and feet alternately," 1670s, originally a move in (male) dancing.