|Vein Man needs some armpit phlebotomy, stat.|
BL Harley 3719, f. 158v (14th c.)
"Beneath the armpits are certain veins called "ticklish" which, if they are cut, cause a man to die of laughter."
Richardus Salernitanus (13th c.?)Tired of people not laughing at your jokes? You could just stab them in the armpits...