the space between 2 mattresses that have been placed next to one another
JACKIE.....GET OUT OF THE BEDGINA!!!!!!
1:The space between two mattresses
2: When a rip or tear occurs in a mattress and the padding splits, leaving a hole where the springs are some-what visible and a good inside joke is waiting to happen between friends.
"Hey, what is that?"
"I do not know."
"It looks like a bed's vagina. It's a bedgina!"