This is similar to the TCP/IP syn response during the setup phases of the 3-way handshake process. This response is specific to MJ-Authentication from the M party.
ik and iag are of the mjml protocal standard
J sends ik to M
M send iag to J
When both parties receive this symmetric key authentication has been performed and communication can safely continue.
Other Friend: Nah man, don't worry bout it, iag...just put more in the bathroom if you run out.
Alternate Response (sarcastic): Nah man, don't worry bout it, iag...I love smelling like crap all day because you can't replace the roll!
A number pulled from "thin air or anatomicaly generated (pulled from ones ass)" for the purpose of screwing field personal or stimulating ones personal ego in order to overcome feelings of inadequacy.
(Accuracy 0 to 1 percent) A rapid estimate based on a degree rather than any experience at all