poon tube 

An artificial masturbatory aide designed to replicate any female vagina.

Linda’s been on vacation all week, so I’ve been hitting that poon tube real hard.

poon tube by Winters & Yonkers June 28, 2018

Poontube 

1) Instrument used as an aid to oral sex

2) Reference to the inside of a womans vagina.

1) After a hard night out and unable to get mr happy Happy, Bill turned to the poontube


2) I was so far up her poontube I punched a hole in here cervix. See cervix boxing

Poontube by Sam & Matt January 11, 2005