A slightly cheeky, a bit old-school British word for someone you reckon is fit, usually a woman. You’ll hear it in lads-chat or in old sitcom energy. It can come off pretty objectifying, so it’s not exactly the most modern compliment. Still, it pops up in banter, often half ironic now.
"Kev clocked the totty by the fruit machine and nearly spilled his lager. His mate went, Behave, you muppet, you’re here to watch the match, not flirt with strangers"