Working around the clock
I recently learned that someone objects to the phrase "24/7" ("twenty-four, seven" -- i.e. "working on it 24 hours a day, seven days a week").
There are a number of reasons, which I can't adequately communicate -- but among others, it's fairly cliched.
Thus, I have decided to use an alternative phrase: when I plan to be working on something full-time, around the clock, I will be "going 60-60-24-7-365-52-12" -- or variations thereof.
("Sixty seconds an minute, sixty minutes an hour, 24 hours a day, seven days a week, 365 days a week, 52 weeks a year, 12 months a year.")