A body builder and his girlfriend were in their bedroom about to make love. the body builder took off his shirt and flexed his arm muscles and said "See this baby, these right here and 2000 pounds of dynamite". his girlfriend was impressed. The body builder flexed his abs said again " This 6 pack baby, is 2000 pounds of dynamite". his girlfriend looked at him admiringly. they were about to get started, the body builder pulled down his pants, suddenly his girlfriend ran out of the room screaming. the next day the body builder met up with his girlfriend and asked why she had suddenly run out of the bedroom. to what she replied "with 4000 pounds of dynamite and such a short fuse i thought you were gonna blow!".