A completely harmlessemail you would welcome in your inbox that gets blocked by your local or server side spam filter.
I was expecting to get an email from you about the opportunity to volunteer at the local shelter for violent offenders, but your email got spam blocked.
Similar to traffic gridlock. Occurs when a fanbase will overload a message board with threads asking to save their show ( that is in danger of cancellation).
Spamlock has cluttered the boards.
...or...
This spamlock has been going on for days.
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"