It's what you do when a stipper tells you she is getting off dancing for you. In order to prove she isn't faking it you have to give her the swag drag. The swag is rubbing her pussy with your index and middle finger to make sure she is wet and then drag your fingers under your nose to smell that sweet cunt juice.
Kyle: Aww dude did that stripper tell you she was getting wet dancing for you?
Randy: Yea but I gave her the swag drag to make sure she wasn't fucking with me to get more dances and money.
Kyle: Damn I didn't know hoes here freaked like that. We better get a couple bottles and a private room to pound some pussy in.
A common ailment associated with having too much Swag. Posting twitter photos with your mate telling the world what new 'kicks' you're rockin can be particular stressful on the knees. A particularly Swag hat will weigh down heavy on the knee caps.
Daniel Sturridge is so Swag that the Liverpool doctors can't cure his Swag Knees. He's out till next season