A blonde is a living person with a specific hair color, and a bowling ball is an inanimate object used in the sport of bowling.
What Mother Superior Found
The mother superior is very upset. She walks into the dinner room and announces to all the nuns to be quiet and listen.
"I was walking around the gardens, as I do." She says in a loud voice, "When I found some disturbing things! For one, I found a man's underpants!"
All the nuns are taken aback except for one, who is smiling.
"Then, " continues the mother superior, "I found a WOMAN'S underpants!"
All the nuns gasp together, except for one, who is giggling.
"And if that wasn't enough, I found.... a... a... used condom!"
All the nuns gasp, and some turn white, except for one, who is laughing quietly.
"And in the condom," finishes mother superior, "was a hole."
All the nuns laugh, except for one, who is crying.