Slang term for getting stoned and masturbating at the same time.
I was bored and had some weed, so I found a couple of porno mags and started to bone up.
by silentounce January 23, 2009
To revise, especially cramming.
"I've really got to bone up on these maths problems."
by Uninnocent May 18, 2004
To roll a joint.
Greg: Are we gonna 'bone up'

Everyone: shut the fuck up, but fine we will get a joint on the go
*finished rolling*
Greg: I don't feel like smoking

Everyone: ... Uuuuuuggghhhh ffs
by Reading2k13 February 05, 2014
When You Get A Hard On & It Makes Your Body Do A Pushup.
Timmy Tried To Do Bone-Ups To Impress His Girlfriend.
by Chi Chang October 25, 2008
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