Inside a dark and silent cave 
he heard the sounds of pain,  
he'd ventured far, a man so brave,   
had thought it a small drain. 
  
Without a sound small geysers spat,  
the path lost all its friction,  
no need to smell an ugly rat 
or face post-haste eviction. 
  
The fit was snug twixt tepid walls,  
the ground now wide awake,  
he'd left outside his trusted balls 
in case there was a quake.
Herbert Nehrlich
http://www.poemhunter.com/poem/caveman-2/