Call hidden in this puzzle's eight longest answers that's apt for May Day?

Question:

Answer:

SOS

Length:

Similar Crossword Questions:

Word hidden backwards in this puzzle's eight longest answers
Role model hidden in this puzzle's longest answers
They're hidden in this puzzle's nine longest answers
Place to live (different ones are hidden in this puzzle's four longest answers)
Five of them are hidden in this puzzle's longest answers
Things hidden in this puzzle's eight longest answers
Resort hidden in the five longest puzzle answers
Word hidden in this puzzle's longest answers
They're hidden in this puzzle's seven longest answers
Driveway stuff (and word that's hidden in this puzzle's four longest answers)
Hoop group hidden inside this puzzle's three longest answers
Annual cause of losing an hr.'s sleep hidden in this puzzle's 10 longest answers
Right now, as hidden in this puzzle's longest answers
NFL tiebreakers hidden in this puzzle's nine longest answers
Word rearranged and hidden in this puzzle's eight longest answers
Rap sheet letters hidden in this puzzle's longest answers
Featured article hidden in this puzzle's nine longest answers
They're hidden in this puzzle's six longest answers
Theme of this puzzle hidden in the seven other longest across answers
HBO's "Inside the __" (and hidden theme in this puzzle's four longest answers)
One is hidden in each of this puzzle's four longest answers
They're hidden in this puzzle's eight longest answers
A different one is hidden in each of this puzzle's seven longest answers
Apt subject for today that's hidden in this puzzle's four longest answers
Peak that's hidden in the four longest puzzle answers