A nun

A nun was walking in the convent when one of the Fathers noticed she was
gaining a little weight. “Gaining a little weight are we Sister Susan?”, he
asked.

“Oh no, Father. Just a little gas.” Sister Susan explained, matter-of-factly.

A month or so later the Father noticed that she had gained even more weight.
“Gaining some weight are we Sister Susan?”, he asked again.

“Oh no, Father. Just a little gas.” She replied again.

A few months later the Father noticed Sister Susan pushing a baby carriage in
the convent.

He leaned over and looked in the carriage and said –
“What a cute little fart!”