woman: no fun tonight  man: why?  woman: because elmo riding the cotton pony  man: :(, i guess i just use this sock instead
menstrual cycle, period, time of month  a phase of the menstrual cycle in which the uterine lining is shed
"woman: no fun tonight  man: why?  woman: because elmo riding the cotton pony  man: :(, i guess i just use this sock instead" What is the definition of "elmo riding the cotton pony"?