Sumner Burstyn 

To commit a Sumner Burstyn

Like kicking a hornets nest or someone when they are dead.

New Zealand Slang.

To create social networking suicide
To be selfish and evil to other human beings

Background: this originates from Sumner Burstyn's disgraceful remarks on her facebook page with sparked hate pages after her comment about a recently fallen NZ Soldier.

Barbara Sumner-Burstyn posted the comments on Facebook, apparently after reading reports of 26-year-old Lance Cpl. Jacinda Baker's death in Afghanistan.
"Oh so fallen soldier Jacinda Baker liked boxing and baking - did they forget she also like invading countries we are not at war with, killing innocent people and had no moral compass," Sumner-Burstyn wrote.

This whole event saw unprecedednted response and a facebook created generated 25,000 members in 24 hours.

Sumner Burstyn has become one of New Zealand's most reviled people and has had to change her name for the 8th time.

New Zealand slang
Don't do a Sumner Burstyn you will commit social netowrk suicide.

That's almost as bad as a Sumner Burstyn be careful what you say

Sumner Burstyn by Sir Tristram August 29, 2012