We'll Keep the Red Flag Flying Here - S4-E3
Stupidity: When Hughie is in the vents above Homelander and Sage and the others, Homelander realises he's there due to sweat dripping. He then proceeds to try and laser eye the vents in random spots, just listening to try and figure out where Hughie is. He completely forgets he has X-ray vision at this point and could just look through the vent to find him.