Is it safe to swallow day old cum that has not been refrigerated?

No, it is not generally safe to swallow day-old cum that has not been refrigerated. Swallowing cum carries the risk of transmitting sexually transmitted infections (STIs), including HIV and hepatitis B. Additionally, semen left outside of the body can become contaminated with common environmental bacteria that may cause gastrointestinal symptoms or other infections. It's important to practice safe sex and use appropriate protection, such as a condom, to minimize any potential health risks.