Insert condition to maintain the penis to show when you are fluctuant, usable hand pulls his hip to you, or vacate a leg to circle him, make it unapt slippery piece.

• 当你变动时为保持阴茎呈插入状态，可用手将他的臀部拉向你，或腾出一条腿绕住他，使它不至于滑出。