kink (n.) Look up kink at Dictionary.com
1670s, a nautical term, from Dutch kink "twist in a rope" (also found in French and Swedish), probably related to Old Norse kikna "to bend backwards, sink at the knee" (see kick). Figurative sense of "odd notion, mental twist" first recorded in American English, 1803, in writings of Thomas Jefferson. As a verb, 1690s, from the noun.