Babblegabbing
When a guy talks nonstop like he's trying to impress a girl, even if she's already dating someone else. He's too dumb to realize she's ignoring him.
'Hey, did I tell you about my dog?' 'No.' 'Well I did! He's the best dog ever!' (He's still talking 10 minutes later.)
He started talking about his ex's new hair cut. She was already asleep.
He asked her out 7 times in one day. She blocked him.