A master of disguise, the shitfag is a cigarette consituted entirely out of shit. These can be used to surprise your friends, annoy your enemies or if your trapped in Mongolia, it is indeed what everyone else is smoking.
Pat: "Oh cheers for the smoke man"
Bob: "It's my pleasure, i couldn't finish the whole pack off anyways..."
*Bob walks off*
Ben: "Dude, you just totally Shitfagged Pat. NICE!"
Bob: "HIGH FIVE."
To use Facebook while intoxicated. May or may not include confessions of undying love to friends, ex's, or total strangers. Grammar and logic will likely be poor. Similar to a drunk dial.
Chris - "Dude, you left 11 incoherent wall posts on my profile last night. What the fuck?"
Spencer - "What? No, I didn't! Oh, wait...yeah, I was shitfacedbooking."