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1.
One who likes little children and has committed and illegal sexual act with a child.

(Usually a term used in jail that one convict will call another convict who was accused of child molestation)
lets kick the balls out of that guy he was arrested for being a Diaper Sniper.
by Juudes July 05, 2009
 
2.
A man or woman who enjoys the companionship of someone who is much, much younger than they are and not in a "father/mother and son/daughter" kind of way. Any person seeking a date with a much younger person.
Woody Allen is a diaper sniper
by barney Driller June 23, 2007
 
3.
Someone who expresses obvious interest in forming a relationship significantly younger than them. It's a compound word with "diaper" referring to youth and "sniper" referring to genuine interest (on the prowl).
I caught Mr. Platt flirting with a grade nine girl today. What a diapersniper!
by Bob Hingle February 19, 2009
 
4.
A person who is sexually-interested, involved with, or is in a relationship with someone younger than themselves. Used as either a derogatory or complimentary term, depending on the one saying it.
*at Brendan's 18th birthday jam*
James: "MAN! You have a girlfriend? Who is she? Name, age? Give me something!"
Brendan: "Well, we met in college a few weeks back. Her name's Michela, uh, she's 19."
James: "What a diaper sniper..."
by theDiaperSniperYe January 03, 2011
 
5.
A man or woman who enjoys the companionship of someone who is much, much younger than they are and not in a "father/mother and son/daughter" kind of way. Any person seeking a date with a much younger person.
Woody Allen is a diaper sniper
by barney Driller June 23, 2007
 
6.
Someone who tend to go for the younger age group.
Sofie why are you dating that gr 7 you diaper sniper!?
by Michael da Bows December 07, 2009