Flop was an American rock band from Seattle. The band formed in 1990, released recordings on the Frontier and Sony 550 record labels, and made a brief appearance in Doug Pray's motion picture documentary Hype!.

Flop's original four members consisted of lead singer, guitarist and songwriter Rusty Willoughby, guitarist Bill Campbell, bassist Paul Schurr, and drummer Nate Johnson. Willoughby, Campbell and Schurr lived together with a few other friends in a large Craftsman-style house in Seattle's U-District near the University of Washington campus.

Willoughby, Campbell and Schurr began jamming together during the declines of their respective bands Pure Joy, Chemistry Set and Seers of Bavaria. Johnson, drummer for seminal Seattle punk band The Fastbacks, frequented many of the parties at the U-District house and eventually joined them, completing the foursome. Never intending to actually become a real band, they toyed with many self-deprecating names including "Butt Sweat and Tears" and "The Value Village People". Eventually however they lied their way into a show and needed an official name and inspired by the headline for a review of a local play in the newspaper "Resounding Flop" was shortened to "Flop" and a band was born.

The band's first live performance was opening for Game Theory at the University of Washington's Husky Union Building ballroom. The promoters originally booked Willoughby's band Pure Joy for the show but Flop played instead, thus notifying his former bandmates of Pure Joy's demise. Pure Joy was still listed as the supporting act on fliers and advertisements.

Flop's live performances over its first two years were marked with near fall-down drunkenness, numerous pitchers of beer poured on band members and audiences alike, and many broken instruments (both theirs and others). Flop was banned from two clubs, one in Vancouver and one in Bellingham during this period.

The band's debut record, The Losing End, was released in 1990 as a 45-RPM 7-inch EP, and contained four tracks of Flop's earliest material: "The Losing End", "Somehow", "Dissipate" and "Fucking Thing" (shortened to "Ucking" on the sleeve and "F* Thing" on the vinyl artwork at the demand of the record-pressing plant's religious owners). The record was released on the Lucky Records recording label, with cover art provided by Willoughby's brother Randy Willoughby.

Shortly after The Losing End, Flop released its first single, Drugs, featuring a cover version of "Action" by Sweet. Willoughby has openly expressed disapproval of the record, along with apologies to the record label Dashboard Hula Girl Records, citing unsatisfactory editing and the poor quality of the songs themselves. The sleeve art contains two photos of cadavers in mid-autopsy, taken from one of Schurr's pre-med manuals.

Following the release of Drugs, Johnson left on an Alaska vacation (i.e., gutting fish in a fish-canning boat), putting the band on a year-long hiatus. After Johnson's return to Seattle, the band came back to the studio to record their 1992 debut album, Flop and the Fall of the Mopsqueezer!.