After a meth, crack or heroin addict gets off habitual drug use, they gain a lot of weight in a hurry because the drug and not eating has slowed their metabolism down. Since their muscles have also deteriorated from this habit, they get a lot of untoned fat: ReFlab.
"First I went to Rehab, now I've gone to ReFlab!"
"ReFlab is one of the leading causes that Americans are so fat."
"I used to be an athlete, but my body went to ReFlab after I was bedridden for six months."
"If I moved back in with my parents, I would begin to ReFlab because of my mom's cooking."