"Tuck my napkin in my shirt cuz I'm just mobbin like that"
Why It's Lame
Look, I'm not even 100% sure what "mobbin" means, but I've heard rappers use that word hundreds of times. There is no way in hell that they're referring to tucking a napkin in your shirt like a 6-year-old eating chicken noodle soup at the dinner table.
"I'm from the streets b***h!"
Ice Cube has an entire song called "Steady Mobbin" and if there even is a mention of a napkin in the lyrics, which I'm sure there's not, it would likely be referring to the one he used to clean up all the jizz after nailing some hoodrat in the back of an Impala.
Tell me about the drugs you've sold or the people you've shot or all the money you made before you were old enough to legally drink and then I'll accept your "mobbin" boasts, Drake. Until then, what you consider "mobbin" is really just "being a pretentious dick at dinner." You might as well be boasting about all those years you spent playing the wheelchair bound kid on DeGrassi High.