Wearing only his undies, a Brisbane man has saved the day after chasing a driver who allegedly crashed into his friend's fish and chip shop overnight.

Daniel McConnell was asleep in his home on Nudgee Road, Hendra, when his wife woke him about 2am to say someone had driven into the shop next door.

"I jumped out of bed and all I had was me undies on and I walked out the front and I seen the car smashed and I seen the bloke walking back to the car and I said, 'Oh, what are you doing, mate? You can't be leaving the scene,' " Mr McConnell told Nine News.

The fish and chip shop, owned by a family for about 40 years, had been badly damaged by the crash.