Double spiff 

Used in sales environments to give the associates extra incentives. Double spiffs are usually given out at the end of a month, quarter or year and sometimes special occasions.

Jason: Dude---I wrote 8 deals today!!!
Yamilin: Sweet---You got some serious double spiffs as today is the last day of March.
Jason: I hope none of them cancel.
Yamilin: Don't jinx it. They will stick.

Double spiff by Jason ERP October 11, 2007

Double-Sniffer 

This sexual sadisfaction technique can be done intersexually. Its when one sexual partner sniffs either the anus, vagina or penis (can also be done all at once). The sadisfaction of the mild breeze blowing through the genital region can be great.
Espacially for women it has shown a very wide range of peaceful feelings.
It is often done with both noseholes at the same time, but can also be done with just one, for a stronger suction.

Baby, please give me a Double-Sniffer.

Double-Sniffer by Trüffelis November 25, 2018

double sniff 

a gesture done when you and another person aware of this gesture communicate using the Double sniff method, , to point out something obvious both people noticed but don't want to say it, fearing those around might hear or notice

2 friends are in a room and a 3 person wearing a horrible outfit walks in, friend one notices and gets friend 2's attention with a double sniff, and by this, friend 2 already know's what friend one means..

double sniff by Flavius nicorici October 8, 2008