Airbag assemblies can reduce rotational velocity of an occupant's head during a collision event. Some airbag assemblies include a first airbag cushion that is disposed forward of an occupant and a second airbag cushion that is disposed generally lateral to the occupant. When the occupant moves in an oblique direction during a collision event, the second airbag cushion may contact the head of the occupant and reduce its rotational velocity.