London, April 12 (Inditop.com) American singer Fergie says she keeps herself trim by pretending that fatty foods on her plate have been poisoned.

“There are times I play mind tricks on myself, like (pretending) that the French fries are poison,” dailystar.co.uk quoted her as saying.

“With desserts, I’ll let myself have just one bite, but I’ll look like a freak when I’m eating it, like when I did Duncan Hines (baked goods) commercials as a kid, savouring every morsel,” she added.

The Black-Eyed Peas member admits it takes plenty of will power to keep herself away from devouring calorific treats at meal times.