A person who suffers from premature ejaculation, or somebody who just cums in thirty seconds or less.
Jenna - "Omg, don't go out with Kevin; He's a goddamn speed fucker."
A paper bag that you take into a bathroom stall and have a person stand in while you are raping them so that when people walk by, they don't see the victim's feet.
I took Courtney to Red Lobster where I put her in a lad bag and made her scream.
To bang a girl so hard so fast so many times, that she can barely walk straight, hence, "walking like an old granny".
I fucked courtney granny style, she could barely even stand up the next morning.