"You see, she crossed her legs....."

An army private went to see the Medical Captain for a new pair
of glasses. The Captain looked in his book of record and said,
"But you just got a new pair last month!"
"Yes sir, b.. b.. but I got them b..broken in an accident,"
stammered the private.
"Accident, what kind of an accident?" The Captain looked in his
book of Accident definitions and glossaries, "Road-march
accident, Firing Range accident, PT accident, Drill accident?"
"No, no nothing of those..." said the private.
"Well then, what is it?"
"I'd rather not tell you sir..."
"Well, no satisfactory explanations, no new glasses," said the
medical officer, ready to stand up, "I've to see my patients
now."
"No, no sir wait, I broke them when I was kissing my girl,"
blurted the private.
"Don't be daft man, how could you break your glasses kissing
a girl?"
"You see, she crossed her legs....."