Twat Salami
Originally used to describe a man so desperate for sex that he would use all his vacation time and travel across the Atlantic ocean to pursue a girl he met once, this phrase is now used interjectionally as a placeholder (often denoting indifference) due to the beautifully melodic sound it makes coming off your tongue.
He actually cried when it was time for his flight back home, and he finally realized he wasn't getting any ass. Oh, well. Twat salami.