To sleep with a blonde, brunette, redhead & bald girl/guy I the span of a week

Having oral, vaginal and anal sex while busting on the women's face completeing the cycle. 4 objectives and four bases hence the meaning hit a cyle!

To sleep with four women, in no particular order, where each of the four must be from a different Scandinavian country. This is done over a short period of time (no longer than four days/nights) with no women from other countries being slept with during this time. A natural cycle is to sleep with a woman from each Scandinavian country in this order: Finland, Norway, Sweden, and Denmark. Usually military men from the United States and Canada, stationed somewhere in the EU, participate. This has been known to take place at holiday resorts where women from each Scandinavian country are present abundantly (for example, Thailand). Of course, unlike baseball with observable evidence, whether a cycle is reached or a natural cycle is acheived is rather doubtful, as most men claim success and yet in reality very little has taken place between the braggart and the woman in question.

When a male a ejaculates using all four classic techniques within a short time span. These four ejaculations consist of a hand job, blow job, sex, and anal intercourse. This refers to hitting a single, double, triple, and home run in the same game or night.

With multiple partners it is considered a grand slam.

When, in college, you hook up with a freshman, a sophomore, a junior, and a senior. Starts to get creepy your junior year.

Baseball analogy: Cumming in a woman's mouth, vagina, and ass all in one sex session.

from the baseball term

to complete four separate sexual acts with a girl in the same encounter

a. blowjob
b. anal intercourse
c. vaginal intercourse
d. receive rimjob