wobbly top
defined as an Intelligence Quotient score under 70, a subtype of intellectual disability; i.e. retarded
Jimmy had to wear his helmet as he was led through the grocery store and the shoppers thought, there goes a wobbly top.
wobbly top hat
When a girl rides a mans dick, and moves around and squirms while she does it. Technically a negative term.
"How was sex last night?" "It was awful. She gave me a fucking wobbly top hat."