The pilot stated that he was taxiing to the parking ramp after landing, and the self-serve fuel pump was "clearly visible" on the right side of the airplane. As the airplane approached the fuel pump, the pilot reached over to open the cabin door and sneezed twice. The airplane "drifted right," and the right wing impacted the fuel pump, resulting in substantial damage to the wing. Two witnesses who observed the accident reported that the airplane was taxiing "fast" and "quickly" respectively. Review of security camera footage revealed that there were no obstructions in the immediate vicinity of the fuel pump. The pilot stated that there were no mechanical malfunctions or anomalies with the airplane.