Eve succeed make Sergei to tumble backwards...but she forgot his hand was on her breast and other in her ass so Sergei merely embraced Eve and pulled her along whit his heavier frame! Sergei worked as pincushion to impact to fall on the floor but Sergei released honest mild painfull grunt on landing. But he then laughed and said to Eve; "I quess you like to be top." Eve managed squirm loose from Sergei's grasp (or did he let her go?) and managed reach whit her mouth his member and Sergei released soft groan and relaxed more and spreaded his legs, to give space for Eve do her work.