
I know. It was when
I stubbed my TOE.
The Big Bang Theory Season 11, Episode 8

Okay, how about you just
dip your TOE in and meet one of them?
The Big Bang Theory Season 6, Episode 24

Or I'll help you along
With the TOE of my boot
The Big Bang Theory Season 2, Episode 18

Toe the line
Breaking Bad Season 5, Episode 14

Syrio says a water dancer
can stand on one TOE for hours.
Game of Thrones Season 1, Episode 4