hi , i am 27 years old man,my penis when not erected is half head out(shrinked all the time),when erected its 4.3'' mayb,but go closer to my partner for intercourse ,my erection finishes ,if i touch her body i ejaculated without my desire.all the time my penis is shrinks.my weight is 81.1 ,height mayb 5.2'',i m lazy also