Extra carbs every 18th meal

Stats...
weight;88kg
height; 1,78m
bf%(skinfolds); 5,7%

Recently I was told that one can eat a lot of carbs every 18th meal, during off-season, and this will help gain lean muscle without adding extra fat to ones physique.

At the moment my diet's nutritional value is equal to +- 375gprotein, 170gcarbs and 50gfats. Carbs are cut out of my last 2meals, that is why they are not high.

Now my question is if I eat something super high in carbs, like a pizza, every 18th meal will this promote fat gain in the long term?

I would really appreciate to hear from people who have tried this.
Thank you

Its pretty much carb cycling, so it should benefit you but keep to cleaner carbs if you can

if i was you i would drop the protein slightly to 360g,on "low carb days" drop the carbs to 120 for the day(split breakfast,pre work out,post work out) and then up the fats about 90g a day, then on a high day drop the fats down to 50g again and add in 200g of carbs into the diet. try do it clean,if not have it as a cheat meal,do this twice a week.preferably on a day before legs,and the day of back or vice versa.