At the site of an incident

(Australia) A coded warning used by men to alert each other that female guests ("ducks") are present ("on the pond"), so that for politeness they should moderate their language.

(idiomatic, Britain) Out for a night on the town.

Alternative form of add-on

(colloquial) An answer indicating outright rejection or denial; no way; absolutely not.

To be less than completely certain; to lack support.

To log in. / To visit a Web site; construed with to.

Upon; on top of. / (informal) Aware of. / Used to indicate, or signpost, logical progression to a new topic in a talk or discourse.

(boxing, professional wrestling) Leaning against the ropes of the boxing ring, as when exhausted and nearing defeat or collapse.

(colloquial) On account of the fact that: because, since.