An individual, probably a millennial, who wants to enjoy a night out on the town but doesn't want to spend any money so he or she utilizes event platforms like Eventbrite or Meetup to find parties offering open bars, free food and/or activities. When a britecrawler visits several of these events in the span of a single evening its what's known as a britecrawl.
"I was told this whiskey tasting was a formal affair. What's with the cool, plaid-shirted mustachioed guy."
"I don't think he was on the original invite list; but his knowing yet lackadaisical countenance that seems to scream 'I'm internet savvy!' tells me he's probably a britecrawler."
Someone or something that bites your ankles.
To a postman, an ankle biter is often known as a dog.
To an adult, an ankle biter may be a toddler.
To hikers, an ankle biter is sometimes a tick.
And so on.
When a man will search for hours to find something that is laying out in the open on a table. Items are often easily found by a women.
Man: "I have been searching for hours for keys."
Woman: "You mean the ones sitting there on the coffee table?"
Man: "Where?"
Woman: "Right there in the middle of that table."
Man: "oh, must have been Male Pattern Blindness"