She says it's his.

He knows his boys don't swim.

YANQUI is a cross-cultural, fish out of water, romantic dramedy streaming series set in Argentina 🇦🇷
Based on a true story.
Comps: Knocked Up meets Fleabag / Catastrophe meets Fools Rush In
Logline: After a one-night stand abroad leads to pregnancy, Josh, a failed NYC entrepreneur convinced by sperm banks that he’s shooting blanks, travels to Buenos Aires to prove to Sofia, the maybe love-of-his-life, that he’s not like his (absent) father.
Status: Pitch / Request pilot presentation screener (39mins)

YANQUI (shan-key) noun, pejorative 

1. Argentine slang for an American

especially a hapless one