go to (someone's) head

1. if an alcoholic drink goes to someone's head, it makes them feel drunk very quickly.

That glass of wine I had before supper went straight to my head.

2. if success goes to someone's head, it makes them believe they are more important than they are.

Just because you won the poetry prize, you won't let it go to your head now, will you?

• have a word with someone
• have back against the wall
• have back to the wall
• have bags under eyes
• have bags under your eyes
• have bats in the belfry
• have beady eye on
• have beady eye on someone
• have beady eye on something
• have been around
• have been around a bit
• have been in the wars
• have big ears
• have bigger fish to fry
• have blinders on
• have blood on hands
• have blood on your hands
• have both feet on the ground
• have burning a hole in pocket
• have burning a hole in your pocket
• have butterflies
• have butterflies in stomach
• have butterflies in your stomach
• have by the balls
• have by the short and curlies