You can't talk behind my back

Well huevos is also slang for balls, so your translation isnt that far off

Yeah, but my joke was saying huegos, which is supposed to mean cock

Never heard of that..

I thought huevos meant eggs
How do you say eggs then

Huevos.
I was told huegos meant cock...

Huevos does mean eggs. That's why I said 'also slang'.
Same in Polish; 'jajki' means eggs but also balls (testicles) in slang speech.