A U-Haul lesbian is a LGBTQ+ (specifically lesbian) term for a lesbian who gets attached very quickly. The joke that goes along with this term is “What does a lesbian bring on the second date? A U-Haul.” Because they get so attached that they bring a moving truck to move in immediately with their significant other.
I went on a date with a U-Haul lesbian. She annoyed me so much that I won’t go on a second date.