tejfölösszájú

tejfölösszájú [ˈtɛjføløʃsaːjuː] – stripling; young and inexperienced boy
(Literally: sour-cream-mouthed)

tejfelesszájú [ˈtɛjfeleʃsaːjuː] – stripling (dialectical)
(Literally: sour-cream-mouthed)

tejföl [ˈtɛjføl] – sour cream
(Literally: milk-up; milk-surface)

tejfel [ˈtɛjfel] – sour cream (dialectical)
(Literally: milk-up; milk-surface)

tej [ˈtɛj] – milk
föl [ˈføl] – up
fel [ˈfel] – up
felszín [ˈfelsiːn] – surface

Well, sour cream (tejfel) is milk fat, that can be found on the surface (felszín) of curd or sour milk (tej).

Photo: 1195798 (pixabay.com)

dióhéjban

dióhéjban [ˈdioːheːjbɑn] – in a nutshell; briefly; in short
(Literally: in a walnut shell)

dió [ˈdioː] – walnut; nut
héj [ˈheːj]
1) shell (egg, nut)
2) skin (apple, onion, potato)
3) peel (orange, lemon)
4) rind (melon)
5) crust (bread)
6) bark (tree)
7) lid (eye)

-ban [ˈbɑn] / -ben [ˈbɛn] – in

Photo: Andreas Lischka (pixabay.com)