Slang for when someone loses there focus or ends up failing to do what the had set out to do.
When I failed my chemistry test, I had lost the plot.
I was telling my friend a funny story, but then I lost the plot and started talking about my grandmother’s brownie recipe.
A trip to a grocery store, convenience store, or gas station for the sole purpose of buying an excessive amount of junk food and sugary drinks, usually with friends. A chud run often happens late at night and ends with everyone involved hating themselves afterwards.