Crossword puzzle clue "wearing only a bottom"

Wearing only a bottom

Class in which the teachers may be the only ones wearing underwear

"I don't believe in rock bottom. Rock bottom is like ___."

Bottom bottom line?

"Baseball, it is said, is only a game. True. And the Grand Canyon is only a hole in ___." (George Will)

"I can only ___ much!" ("I'm only one person!")

Letter appearing only in down answers; its opposite appears only in across answers

"My only love sprung from my only __!": Juliet