a condition usually found in single men who spend so much time 'pleasing themselves in the Boy area' that their right arm over develops severely, like one of Popeye's arms...or a fiddler Crab
man: Doc, you got to help me, I can't get my shirt sleeve over my arm its so swollen.
Doc: I'm afraid young man that you have developed "Popeyeing of the forearm"
man:is it curable?
Doc: try not to wank your nutsack flat every night and shag someone instead, that'll sort it.
When the person who just received a blumpkin puts their arm elbow deep in the toilet and then closelines the person who just gave them the blumpkin.
Ben was enraged that Kristie used her teeth when he climaxed on the can so he immediatly gave her a blumpkin forearm shiver to let her know who's boss.
When your girlfriend is giving you a handjob with one of her forearms and she knocks you out with her other forearm just right before you are about to climax.
Sarah and I had a good Tim last night. I was gonna cum on her face until she hit me with phenomenal forearm.