Longest I've gone without has been three days. I work a graveyard shift so when I get home at 7am I usually throw some pajama pants on and go to sleep then when I wake up (about 3or 4 in the afternoon) I usually have to go somewhere quick before they close so I just throw on the first jeans I find and a shirt and go. When I do this my girlfriend tells me I'm such a typical guy lol