What is 3.4?
"All the time" or "constantly."
It's derived from the term
"3.4" is just used because it's much easier to type and say than the previously mentioned decimal equivalent.
Joe: OH NOES I GOTS TEH SHITZ!!!!111 I think im SICK AGAIN! =-o :-
Phil: You're sick 3.4, you really need to go to the doctor... or go to bed at a normal time... OR stop eating fast food every day...