When fingering a girl. One inserts their finger so deep at it reaches the second knuckle.
I went second knuckle deep in Sarah last night.
When a person inserts the finger into the caboose till the second knuckle is hidden by the rim.
Chris goes second knuckle deep while wiping his ass, not on accident.
When a person inserts the finger into the caboose till the second knuckle is hidden by the rim.
Chris goes second knuckle deep while wiping his ass, not on accident.