Stargate
1 A extremly large vagina

2 A big birth canal

3 A caverness like vagina that can sustain a echo if yelled in to at a sufficient volume.

4 A slack vagina
1 that girl i had sex with last night had the biggest vigina it wasn't even sex. i just materialised through that stargate.

2 My wife has a stargate my kids practicly cart wheeled out.

3 I have yet to meet a Oregon women with out a stargate in the pants