Braille bobbing

When you go down on chick with the tip of your tongue to see if it's ok down there. The tip of your tongue jabs her clit or digit which makes your head bob which let's you no know instantly if it's ok it's like checking if your cars oil is good when put the dipstick in

Cindy pulled a double shift yesterday at Mongolian Barbecue when she crawled into bed I Braille bobbed and was like I'll take the check hence Braille bobbing