Longest I went was about 6 days, not because I was in trouble but because I wasn't aloud to masturbate. But when daddy got home it was so amazing and I understood why I wasn't aloud to masturbate, it was worth the wait.
I have been denied as punishment but that's never lasted over 3 days. That's sometimes more tough because he'll get me worked up but not allow me to orgasm. Its not really a issue much we've been together long enough that I don't get in trouble much, I know my boundaries and follow them, if im not sure I always ask first.
My desire seems to peak after about a week of celibacy. During the first 24 hours after an orgasm my lust is very weak, which is a source of irritation to me, since I love the constant desire of needing to cum.
I went over a week recently. I didn't have chastity or anything like that. I kept thinking I'd save it for a good chat. That chat just never happened due to my schedule. It felt pretty good regardless when I let it out. Love the squirt when it's held back for that long.
My longest time was 10 days, i could concentrate on much. my thoughts were constantly on how my balls ached and how i knew how much she enjoyed my agony. but the pain in teh balls. was great in that all i thought of was her. 
