a "dud" in the world of disposable vapes refers to a device that has less than 1/4 juice left and is approaching the end of its usable life. Duds are most commonly sold in the pipeline industry
"Hey, I heard you're looking for a cheap disposable vape - I've got a few duds with some juice left if you're interested!"
Get the Dudmug. 
Sexual maneuver where the girl places a can of beer up her Vagina and proceeds to sit on a face. The beer is then opened and the beer must be shotgunned while eating the girl out
Get the The Dangmug. 
a fabulous person has this name. they are a girl and rare to find , they are a closed book but its not really visible and you can trust them to stick by you at all times. they are loyal and shy in large groups but quite loud in small groups. they avoid confrontation but still get it done. (name pronounced, chol-weh)
Get the choolwemug.