This would be similar to pressing both of your lips together but with your mouth open. Use your lips to slightly cover the teeth.
Unless your sexual partner explicitly tells you they don’t mind you nibbling on their manhood (some guys don’t mind having their foreskin “nibbled” on, for example), then no teeth should be used. Some of these may be obvious, but you would be surprised at how many people miss these key steps.
Before we ease on down the road to Swallowing Heights, we must review the general rules of sucking dick (fellatio).
