All manner of watercraft will be on display for your ogling (or purchasing) pleasure. Activities for kids (e.g., a live catfish tank) and adults (Army Bass Anglers) help keep things afloat. Thu.-Sun., Jan. 16-19. $8, ($4, kids).
Austin Convention Center, 500 E. Cesar Chavez, 512/404-4000
Well, it's not a subway, per se, but we're droppin' our drawers regardless. Join others in this flash-mob-esque takeover of the MetroRail and continue your journey through Downtown. Again, pantsless. (Underwear required to not get arrested.) 6:30pm. Free.