A hat trick is getting three of the same win in one go, most famously three goals in a match. It started in cricket, but now you can use it for any triple achievement, like three deals, three wins, three miracles before lunch. Honestly it just sounds classy, like you should be handed a wobbly pint and a round of applause.
"Gaz banged in a hat trick down the five a side, then tried to chat up the ref at the chippy like he’d won the Ballon d’Or"