Brain fog the day after a night of excessive drinking. You move a little slower, the brain doesn't function like normal, and the simplest of tasks take 3 times as long.
I can't remember the name of that song, I have Jello Brain today.
Oh Jello Brain got lost on the way over, he stayed out until 4 am.
A condition where too much time working on a project without a break results in temporary cognitive dysfunction. It is especially common in Web Design, Coding and other tasks requiring extreme concentration for long periods of time.
Someone or something that bites your ankles.
To a postman, an ankle biter is often known as a dog.
To an adult, an ankle biter may be a toddler.
To hikers, an ankle biter is sometimes a tick.
And so on.