The 68 sex position is a variation of the 69 position in which only one partner receives oral sex.
To get into this position, the giving partner lies on their back, with their knees bent and their feet flat on the floor. The receiving partner then lays on their back on top of the giving partner. The receiving partner’s head sits between their partner’s thighs for support. Their genitals are near their partner’s mouth. Both partners are facing upwards. Once in the 68 sex position, the giving partner can perform oral sex on the receiving partner.
The 68 sex position gets its name because it is so close to the popular 69 position. There is just one less person receiving oral sex; 68 is one number less than 69. People enjoy the 68 position because they can fully focus on their roles. The giving partner can focus entirely on their partner’s pleasure and responses. Some say they can pleasure their partner better when they are not distracted by the sensations in their own bodies. The receiving partner can focus entirely on the way that their partner makes them feel. This focus can help them feel their sensual pleasure more deeply.
The 68 sex position may also be called the "Munch Position" if the receiving partner has a vulva.