Adjusting the legs during intercourse can significantly change the angle of penetration and the depth of sensation.

So, What's "The Knee Thing?" The TikTok Trend Explained - The Knot

The legs can also be a focus of "outercourse" or foreplay to build anticipation.

Intercrural sex, often called , is a form of non-penetrative sex where the penis is placed between a partner's thighs.

: While kissing, one partner places their knee between the other person's legs, applying gentle pressure against the pelvic or inner thigh area.