Skins: Cassie and Sid

Cassie is one of my favorite characters in the whole series. In one of my favorite seasons of Skins Cassie has a crush on Sid.  And after Sid asks her she decides to show him how she does to trick her parents into thinking she's eating. A phrase she uses was gotta dash. I looked it up and it means to leave.

Dictionary: onlineslangdictionary.com/meaning-definition-of/dash