A sexual act were the male separates the womens ass checks and forcefully crams his nose all the way in and repeatedly blows his nose and shakes his head back and forth then repeats the same act with his tongue.
"Dude, this chick's gonna be here in like 30 seconds and I can't remember if I put on deodorant or not... hate to do this to you, but can I get a quick brosniff?"
"Sure thing brother... hey, now that you mention it, could you get me next?"