Is "zuhanyzom" a kind of Definite Conjugation in this case?
No, it's just because zuhanyzik is an -ik verb. They usually have -om/-em/-öm suffixes for the én-form.
why is 'i am in the bathroom, i take a shower' wrong?
I think that "I am in the bathroom, I am taking a shower" would be good - I take a shower is not in the correct tense I think, because this is currently happening.
I have a shower in the bathroom
-------- this means that you have a location wherein you can take a shower, as opposed to, for example, take a bath . . .
Big 21 aug 19
Unless you add, for example, "every day". English's two present tense are no end of trouble ... :)
------- i have a shower = i possess a shower. i take a shower = i get into a water stream and (usually ) soap myself up . . .
i have a shower every day restates that a shower isn't very mobile. it hasn't left home . . .
Big 2 oct 19
Reading the comments on this page has led me to conclude that there are native speakers of English for whom "I have a shower" refers only to possession and not to washing.
That's not the case for all varieties of English.
I am in the bathroom, having a shower. Wrong?
taking a shower sounds more natural.
They're regional variations in English. They're both fine.
No, it's good.
------- but not in america. you'll be understood but immediately recognized as a foreigner . . .
Big 26 jan 19
We just had 'dolgozok, and in that case dolgozom was in the red!!!Can we say zuhanyzok? In my youth IK verbs did not take dolgozok;this was a mistake.