"stretch the limits" - to go further (in any field) than anyone or any group has done before. perhaps doing something that wasn't previously thought possible.
dude, that quadruple-backflip double-twist one-handed going backwards while blindfolded and sucking a lolly (deep breath) surf manoeuvre was really pushing the envelope.
by Smiff November 4, 2003
Get the push the envelope mug.
1. An extremely smelly, gross, vile, possibly radioactive, dirty vagina that has been stretched beyond belief. Overflowing with semen from multiple men and some horses.
2. A dirty whore with said vagina.
1. "That bitch had such a nuclear envelope that I wouldn't even touch her with a 10 foot pole."
2. "I'm not putting my dick anywhere near that nuclear envelope!"
by FBAC if you DEFC April 14, 2010
Get the Nuclear Envelope mug.
The sexual manuveur to take one's cock and balls and put or stuff them both into the woman's vagina.
Man, the new bitch at the office is so loose I ended up stuffing the envelope last night.
by Yerby August 17, 2006
Get the Stuffing the Envelope mug.
somebody is secure in the knowledge that someone is working positively on their behalf.
Making sure that the customer is inside their comfort envelope.
by Spuggy2345 November 26, 2011
Get the Comfort envelope mug.
A term referring to a woman's vagina. Can also be used more specifically to describe a vagina that is a very good fit for the guy using it.
I used my girlfriends comfy envelope last night to post a letter to the navy

My wife's comfy envelope is just right for my letter opener
by Shanks120y August 3, 2009
Get the Comfy Envelope mug.