1) one-upping someone by buying a glass table and interrupting them in the middle of a story to talk about how shiny it is
2) a complicated ritual for one-upping someone during a threesome.
Lynn: (interrupting) I just bought a brand new glass dining room table.
Anne: to friends Oh my God, Lynn totally glass tabled me.
2) Anne: So Lynn and my husband were totally leaving me out in the middle of a threesome, so I glass tabled her.
Joseph: You WHAT?!
Anne: Y'know, she had her eyes closed, ignoring me, so I sat on her face.