duh
1
used to indicate that something is obvious or known already, often in a sarcastic or humorous way
- Duh, everyone knows that the sun rises in the east.
- You need to plug in the power cord for the computer to work, duh.
- Duh, if you don't study for the test, you won't do well.
- Of course I know how to tie my shoes, duh.
- You’re tired because you didn’t sleep, duh!