SMIDSY noun 1phrase 1forms 1 noun1 •An accident in which a larger vehicle hits a motorcycle or bicycle because the driver did not see the cyclist.The motorist claimed Smidsy after the crash — ‘Sorry mate I didn't see you’. — 2010 phrase1 •(UK, Australia) Sorry mate, I didn′t see you.“SMIDSY?” Rich chuckled, “Yeah, car pulled out into me, then literally as the guy got out and looked at me lying on the road he said,'Sorry mate, I didn't see you,' S-M-I-D-S-Y.” — 2017 formsSMIDSYs