A Biggin is something unusually large..such as a big ass car, diamond, dick, person, etc. Use your imagination...
"You slept with Joe last night...OMG, I heard his dick is a freakin biggin!"
"Did you see that ass just pass by..now, that's a freakin biggin!"
"Did you see that ass just pass by..now, that's a freakin biggin!"
by ktone August 13, 2017
Get the Biggin mug.