have (something) on the brain

informal

to not be able to stop thinking or talking about one particular thing.

You've got cars on the brain. Can't we talk about something else for a change?

• pull/tear hair out
• pull/tear your hair out
• Pull the other leg !
• Pull the other leg it's got bells on!
• Pull the other one !
• Pull the other one it's got bells on!
• pull the plug
• pull the plug on
• pull the plug on something
• pull the rug from under
• pull the rug from under someone
• pull the rug from under something
• pull the rug out from under
• pull the rug out from under someone
• pull the rug out from under something
• pull the strings
• pull the wool over eyes
• pull the wool over someone's eyes
• pull through
• pull through something
• pull together
• pull to pieces
• pull up
• pull up a chair
• pull up by bootstraps