Couples may choose to explore ball sex for a few reasons including:
- The novelty of trying out a whole new type of intercourse
- An additional erogenous zone for the testicle-owning partner
- Double penetration for a receiving partner where both the penetrating partner's penis and testicles are inserted into their partner
- A way to continue intercourse with a different body part after the penis has ejaculated and started to get flaccid
- An on-demand penetration option where penile erection is unnecessary
Initially inserting the testicles for ball sex is one of the most difficult aspects. Use both hands (with very-recently trimmed fingernails) to help coax each testicle, one-by-one, into the receiving partner. Liberal use of lube and patience from both partners can help make this as painless as possible.
Once inserted, unlike many forms of intercourse, both partners will be limited to a very small grinding motion. The reduced length of the scrotum (compared to the shaft of the penis) makes it easy for the balls to slip out of their partner, so small, grinding-like motions can help the testicles stay inside of the body. Couples may find that sex furniture or other position aids are vital during their exploration of ball sex as well; it can provide angles that allow bodies to get as close as physically possible.
While used less frequently when referencing oral penetration, if thrusting is the goal, ball sex can also be done orally. Simple licking and sucking of the testicles would not qualify as ball sex for most couples; both testicles would need to be inserted into the mouth and thrusted in and out.
The term "ball sex" may also be written as a single word with no space: ballsex.