Assertion: penis | /r/CapableOf | contract in reaction
Facets:
value: to cold temperatures
type: CAUSE
value: to nervousness
type: CAUSE
value: involuntarily
type: MANNER
Source sentences:
text: The penis and scrotum can contract involuntarily in reaction to cold temperatures or nervousness, referred to by the slang term "shrinkage", due to action by the cremaster muscle.