Humor in Uniform

When I came back to the States after a tour of duty with the Marines in Vietnam, I stayed with my parents for a 30-day leave. Mom's rules were simple: I could come and go as I pleased, but I must let her know when I returned home each night. After one long evening with friends, I crept into the house and didn't knock on Mom's door. Late the next morning when I came down to breakfast, she glared at me with icy silence. "Look, Mom," I said, "I'm sorry I didn't tell you I got home safely last night, but what did you do all the time I was in Vietnam?" "Well," she replied, "at least then I knew where you were!"