“Why you stuck-up, half-witted, scruffy looking Nerf™
herderhoarder!”Leia makes a personal attack on Han’s hobby of collecting Nerf guns. Recolor his blaster to be brightly colored and plasticky accordingly throughout the films.
Better yet, after Leia says her “Nerf-hoarder” line, have Han pull out a Nerf gun on Leia and say, “Who’s scruffy looking? It’s Nerf or nothing!” before he fires a foam bullet at Leia’s face.