And you say my sister doesn't jerk you off? Let me do it then...

This poor twenty-something teenager is sad and pissed off because his girlfriend of a similar age doesn't seem to pay much attention to him sexually. He tells his sister that she is the complete opposite of her girlfriend: she loves to fuck, suck... and give handjobs. And his girlfriend has never given him one before. It's understandable that the boy cums so quickly...