Is it physically possible to lose arm fat in 2weeks?

Not unless you lose: Fat/ weight overall. There's no such thing as natural spot fat loss. You need to lose weight in general ; a certain % will be arm fat. Eat healthfully ; be physically active. Calories burned must > calories consumed. You can tone your arms w standing biceps curl w dumbbells, hammer curls w dumbbells, triceps kickback w dumbbells ; lying triceps extension w dumbbells. Don't expect a lot in 2 weeks.