Something that smell's awful.

The proud weighty member in a state none other than semi-erect. Girth, Length, and Vessel Grouping are highly desirable features according to Dingus historians. ("The evolution of the Dingus" Circa 2001)

it has infinite meanings applicable to a host of social situations. However, usually it is in reference to the male genitalia.

The male organ

A big dumbass trying to be smart
If u dont like my definition then ur a dingus

An acceptable word to interject randomly into conversations or when there is an awkward silence. Can also be used to describe things when an appropriate adjective is unavailable.

A dingus is what you call a peer when he/she is being ignorant, dumb or retarted.