By Sofie Jackson & Joe Smith A young boy who was on a cycling trip with his mum has been left “terrified” after a man hit him in the head while riding his bike, his mother has said. Mum, Emma Weeks, 31, said her son, 5, was enjoying a bike ride with her and his older sister on Cleethorpes seafront when the man attacked him shortly after 12pm on Monday (April 8). The family were cycling on North Promenade near Wonderland when the unknown man allegedly struck the little boy, snapping off part of his helmet, GrimsbyLive reports. Emma said she tried to chase the man down as soon as it happened but…