The phrase "got it on" is a colloquial expression that is often used to describe engaging in sexual activity. However, it is important to note that this phrase can be offensive to some, as it reduces a complex act to a crude phrase. As such, there are many synonyms that can be used to convey the same meaning without being vulgar. Some alternatives include: hooked up, made love, had sex, got intimate, got busy, made whoopee, got frisky, and got down and dirty. Using these phrases can be more respectful and mature when discussing intimate relationships.