Julian was drinking Dr.Dew (Dr Pepper+ Mountain Dew).
He said Dr. Dew he made was very good although he admitted that his sperm production rate may possibly get retarded (I just used 'R word', but it is properly and appropriately used as an adjective meaning 'slowed down').

I wanted to ask him why he named it Dr.Dew, not Mt. Pepper, but Ididn't.