I hope this is a good one, this is sexual as well.
A large built-up all muscular guy meets a woman at a bar. After a number of drinks, they go back to his place. As they make out in the bedroom, he gets up and starts to undress. After he takes off his shirt, he flexes his muscular arms and says, "Do you see that baby, that's 1,000 pounds of dynamite." After that, she begins to drool.
The man starts to take off his pants and strikes a bodybuilder's pose, looks at his bulging thighs, "Do you see that baby, that's 1,000 pounds of dynomite." After that, she begging for sex. Finally, he drops his boxers and after a quick glance she grabs her purse and runs away to the door.
He catches her before she leaves outside of the house and asks, "Why are you in a hurry to leave?" She replies, "2,000 pounds of dynamite and such a short fuse, I was afraid that you were about to blow."