Teges is used used more for something we don't know how to call otherwise (in slang of course, as you correctly noticed, but the kind of slang used by people who are already a couple decades old). Might be used in some phrases like „ten teges” ("this thingy"), „nie ten teges” ("dumb" about a person) or „teges-szmeges” ("some stuff" that was told).
It's not used for mentioning a thing in general context („rzecz” is already perfectly fitting for that even in casual context).
In (UK) English:
- this/these: object(s) within arm's reach;
- that/those: object(s) I can't touch without standing up.
|Distance →||Nearby||Mid distance||Further away|
For simplicity, this Table includes only Nominative forms of the Polish determiners. Duo's notes on Determiners fill in the missing details.
[Posted 11 Jan 2019; ed. 18 Nov 2019 18:23 UTC]