shitvelope 

An envelope containing faeces (shit), the primary purpose of which is to upset its recipient. Could be thought of as a harmless relation to the letter bomb. Sending one most likely constitutes mail fraud in most jurisdictions.

I sent a shitvelope to Jack Thompson because he is such a total, utter, fucking asshat.

shitvelope by YOREMA October 15, 2005

shitalope 

Like an antelope, with shit.

The shitalope is a majestic creature. With a long curving neck, all covered with shit.

shitalope by Violetownz January 12, 2008

skinvelope

Fuc your bradyy

I ripped the skinvelope with my teeth

skinvelope by That one niglet July 31, 2015