You can keep moving your fingers down slowly until you reach the point where it feels deep enough inside your mouth. Most sex clubs and bathhouses have similar set ups, but you'll also find glory holes in some public restrooms at truck stops, in parks and at libraries. You can experiment with making different patterns with your tongue and try different rhythms — taking cues from your partner as to what she enjoys most. Have you always wanted to perform oral sex on a Middle Eastern muscle man as he grabs you by the ears? But the whole pelvic area is very sensitive.