What is Spacefiller?
1.
A person (typcially a girl) who is only used to pleasure another person (typically a man) in the time of space before he is in another relationship.
Grace and Mike weren't dating. Grace was just Mike's spacefiller until he hooked up with Kayla.
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1.
This phrase is most commonly used when it's based on oral sex. This can be said by a male or a female.
I'm trying to explain,..