Butter will keep for a long time refrigerated. Up to 6 weeks. You can also freeze this product and it will keep for over a year.   Hi - I only accessed this question as I hâ¦ave just tried some butter I had in the fridge. It is now Sunday 14th June 2009.
Sperm can be stored inside the male body for approximately 3 weeks after they've matured, after which they die inside the body if not ejaculated. So the entire sperm life cycle inside a man's body if not ejaculated (10 week maturation time + 3 week storage lifespan) is approximately 13 weeks or about 3 months.
Sperm are stored within the epididymus and remain there until they mature. Once mature, sperm travel through another long tube called the vas deferens. The vas deferens carries sperm into the urethra, where the sperm exits the body. The urethra is also a part of the urinary system. It is the same tube through which urine exits the body.