Equates to 'beaten', weighed or murked. If somebody is 'flopped', they are beaten up. Used by rudeboys and chavs in south Essex.

when you're hungover as shit after a spending a night drunk as a skunk

When someone decides not to show up last minute.

when somebody totally fails at life.

Being highly fucked up on xanax, kpins, or valuims

That sensation one can experience when they collapse onto a comfortable surface after strenuous activities. This feeling occurs after a "flop" has taken place, which is the action of flopping down onto the comfortable surface. At times a good flop can in fact surpass the feeling of sexual intercourse.

did'nt work out as planned