"Make whoopie" is a colloquialism for having sexual intercourse. It is considered a playful and lighthearted expression used by some people to express their desire for physical intimacy. However, some individuals may prefer to use more discreet or formal language when referring to such intimate activities. Common synonyms for "make whoopie" include "make love," "have sex," "get intimate," "hook up," "sleep together," "copulate," "fornicate," "engage in sexual activity," or simply "have fun." While there are many alternatives to "make whoopie," it is essential to choose words that feel comfortable and respectful to both partners involved.