dogpile

A disorderly pile of people formed by jumping upon a victim.

The bottom man of a 'dog pile' in a fraternity house scuffle is in a hospital with a neck dislocation.

Any similarly disorderly pile of people or things.

Purdy tucked the pigskin under his elbow and cantered over a dog-pile for a tally.

Unscrambling the dogpile of objects can be messy.

A pile of dog excrement.

Mrs. Brown cleaned her lawn up bright and early each day; Picked up all the dog piles so her children could play.

The situation where many participants attack the same user (on a discussion forum or similar).

A cache stampede.

To jump into a dogpile.

He can either take a beating from one man or... be dogpiled by a dozen men.

I fumbled the snap, fell on the ball and about 10 guys dog-piled on top of me.

To pile on, to overwhelm in other senses.

For many participants to attack the same user (on a discussion forum or similar).

But this guy was serious, using online payment services and dogpiling her e-mail box within minutes, requesting expedited shipping.