It is most commonly used as a euphemism for non-penetrative sexual activity, specifically intercrural sex (rubbing against the thighs).
Imagine a minimalist illustration:
"Retaliation is for the angry. Resilience is for the mature. Your goal is not to destroy the attacker's machine. Your goal is to make your own network a mirror maze—reflective, confusing, and ultimately unnavigable. The attacker should leave not because they are blocked, but because they are bored." Gal Kapanawa
Beyond heterosexual use, the term is a staple in the lexicon of the MSM (Men who have Sex with Men) community in Sri Lanka. It describes a common sexual practice within this group and has branched out into further specialized slang: It is most commonly used as a euphemism