A person who cannot be woken up easily. Someone who is addicted to heavy sleeping and needs some loud noise or a heavy impact to wake up.
by Bada Dizzle August 17, 2010
 Get the Sleep Niggamug.
Get the Sleep Niggamug. by I’m gonna shrek it April 20, 2019
 Get the spine bone nigga sleepmug.
Get the spine bone nigga sleepmug.