Wendy’s limited-time deal, which is available nationwide at participating restaurants starting June 20, provides customers who buy a Biggie Bag in the Wendy’s app one small Frosty, free of charge.

On Sept. 13, 1994, the same day President Clinton signed the Violent Crime Control and Law Enforcement Act, rapper Christopher Wallace, better known as Biggie Smalls, or the Notorious B.I.G ...