When you make a really big, really smelly poop, package it in a box, and ship it to someone on their birthday. It is usually wrapped in birthday wrapping paper
by Mr. Ornelas October 8, 2017
Get the Potato Mailmug. by Dizzy Fascist May 12, 2014
Get the penis mailmug. In Northern Ireland mail means to date someone usually they will ask over text “mail xx” and if you said yes the u would probs talk over Snapchat and irl it would be awkward but if you said no you would tell all your ewww he asked me for a mail cause after that he would probs ask every other girl In your class until someone said yes also these mails would last a day or a week at most
by Jess.schnapp December 27, 2020
Get the Mailmug. After eating huge quantities of cabbage and drinking 2 Liters of Rot-Gut whiskey, I released a terrible Smell Mail to my unsuspecting Manager at the office.
by Will and Steve December 20, 2008
Get the Smell Mailmug. A challenge where someone mails themself to a friends house or random house and have food and water with them.
by boaz274 March 18, 2017
Get the human mail challengemug. 
by Lectric Larry January 21, 2019
Get the MAILmug.