Legal lines run on the profession's own drama: objections, verdicts, guilty parties and things held against you. Law students trade these through exam season, and the bar — in both senses — is the natural venue. Precision earns respect here; a correctly-deployed habeas corpus joke tells a lawyer you did the reading.
The "is it illegal to look that good" family is the entry level. The procedural deep cuts are for people who bill by the hour.
Legal flirting is cross-examination with better intentions: leading questions, establishing chemistry on the record, and knowing when to rest. Law school bars, post-exam drinks and professional mixers are the venues — anywhere the audience will catch a procedural joke and respect the craft of a well-constructed one.
Related jurisdictions: police lines for the enforcement side, accounting lines for the other billable-hours profession, and the full occupation collection for every other day job.

