1. The actual mother or father of a child, who can't afford or does not want the responsibility of raising the child, so he or she drops the child off at a random place to be raised by a random person or group of people.
2. The opposite of an adoptive parent.
After my baby's daddy left me, I had no choice but to become an I dropped it parent.
Parents that believe everything their child says or does, especially the younger one.
Dude, both of my parents are sucker parents, they believe everything my little sister does, if she's crying because she can't get her way, then when she gets her way, she quickly stops crying, that should tell you that she was just putting on a scene!
Your dad is such a sucker parent.
Mom! Only a sucker parent would believe that actually hurt him.