Sometimes all you have to do is ask. A fan named Ernesto Guerrero sent a tweet to Texans running back Arian Foster looking help paying for his college textbooks.

Foster answered the call.

According to one of his tweets, Guerrero is attending Texas A&M International in Laredo.

Guerrero's good fortune inspired a copycat tweet at Foster, but there is a limit to what he can accomplish.

Check out more Arian Foster stories on ThePostGame.