Describing a very erect penis.
"Baby, your thingy was like a plank last night- straight and smooth and hard as wood"
finnegan o brien (otherwise known as the notorious bigboyfinn) is the definition of a plank mf, saw him irl and I was like damn hes one mfing plank.
"damn look its finn o brien"
"bruh- that bigboyfinn is one planky mf
Someone who is a bit if an idiot most of the time. Does things without thinking and lacks common sense.
"Wow, Norman is such an idiot."
"Yeah I know, he's a proper plank."
The opposite of nimble. Normally this term is used in sports.
Teammate 1: That guy lost the ball as soon as we passed it to him wtf
Teammate 2: Yea don't pass to that wooden plank again
When you plank over the female while piped up and she thrusts continuously up while you stay in the plank position.
Guy: Hey whatup :)
Girl: whatup :)
Guy: wanna try the pipe and plank?
Girl: yessss
When you order extra crumbs at Long John Silver's and they toss in a free fish plank in your bag.
Damn... Jeff got free fish by just asking for crumbs? He is a certified Plank Daddy!
A phrase that is used for a person who has or is fully fucked the fuck up with no get back.
Me: send me a dick pic
You: for sure
Me: WTF is this, are you playing?? I've eaten bigger jelly beans. Fuck that, walk the plank