I Only Drink Mountain Dew

I only drink Mountain Dew and Dr. Pepper and Pepsi." because I heard it makes your penis- What song should we sing next? "Finish your sentence"?

An anime-style catgirl VTuber sits in a cozy beach-themed coffee shop, singing into a microphone while playing a guitar. She lists several sodas, then abruptly trails off after saying she heard one affects a penis, before trying to change the subject and asking what song to sing next. The joke is the awkward innuendo and her feigned confusion when the chat tells her to finish the sentence. EN: An anime-style catgirl VTuber sits in a cozy beach-themed coffee shop, singing into a microphone while playing a guitar. She lists several sodas, then abruptly trails off after saying she heard one affects a penis, before trying to change the subject and asking what song to sing next. The joke is the awkward innuendo and her feigned confusion when the chat tells her to finish the sentence.

I only drink Mountain Dew and Dr Pepper and Pepsi. I don't drink Mountain Dew because I heard it makes your penis... What song should we sing next? Huh? Finish your sentence? What sentence?