23rd President: Benjamin Harrison, 1889

Nemo = 23 (Harrison was the 23rd president)

Hairy sons = Harrison

Five pee = 889 = 1889

Big Ben = Benjamin

Nemo (23) isn't best pleased with the five hairy sons (Harrison) as all five pee (889 = 1889) into his bowl.

Connect Harrison to Benjamin

The hairy sons (Harrison) took their pee just as Big Ben (Benjamin) was striking one.

NOTE: Mammoth Memory's way of remembering Benjamin or Ben is to think of Big Ben (the Ben that everyone knows!).