  We propose a method to prepare Majorana pairs at the corners of imprinted
defects on a two-dimensional cold atom optical lattice with $s$-wave superfluid
pairing. Different from previous proposals that manipulate the effective Dirac
masses, our scheme relies on the sign flip of the spin-orbit coupling at the
corners, which can be tuned in experiments by adjusting the angle of incident
Raman lasers. The Majorana corner pairs are found to be located at the
interface between two regimes with opposite spin orbit coupling strengths in an
anticlockwise direction and are robust against certain symmetry-persevered
perturbations. Our work provides a new way for implementing and manipulating
Majorana pairs with existing cold-atom techniques.
