A term used while paragliding on small practice hills where you are not able to actually take off, but still able to sit back in your harness so your bum drags along the ground to the bottom of the hill.
-How was the site?
-If the winds were strong, there could be some lift, but without decent wind we were only able to do a few bumrunners.
Bedrunkened is the act of becoming drunk, often without consciously doing so, frequently at the hands of friends, usually in a quiet manner.
He labored with his mug of mead until he found himself quite bedrunkened, he felt the warm rise of the wine pulsing in his head, and sight contentedly over his small fortune.