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Use "willy" in a sentence
"I think the uncircumcised willy is much nicer than the circumcised willy."
"If we are going to push the envelope by telling children that a willy is now a penis and a woohoo is now a vagina, then we would be doing a disservice to our little snowflakes if we didn't tell them what the slang names of the various sexual parts are."
"Jumping in willy nilly is not going to help much, if at all."