Twitchy and Wacky Occurs in runners and other athletes when they have too much energy. Sometimes subtle, sometimes painfully obvious.

a twacky is the shudder that goes up your spine when you are taking a very relieving piss.

To have the qualities of a stimulant, such as meth. This can include feelings of jitters, excess energy, paranoia, restlessness, etc. See twack.

in bad taste, but expensive

Nasty taste in your mouth, often after consuming something or something not so pleasurable