It’s odd that crossing fingers (at least in some cultures, such as mine) can mean either “good luck” or “I don’t have to keep the promise I’m making.” Maybe it’s an attempt to summon good luck in the endeavor of hiding one’s lie?
TEXT OF COMIC:
I entered my short story in this competition online. It’s judged by public vote, so go vote for it!
Ok, I will. I hope you win! Fingers crossed!
HEY. Are your fingers actually crossed? LET ME SEE.
What’s your deal? Do you think crossing my fingers will actually improve your luck?
No, but if you’re crossing your fingers while you promise to vote for me, that could have another meaning.
Don’t worry, I wouldn’t double-cross you.
MOUSEOVER TEXT: Physical signs of lying include nervous fidgeting, lack of eye contact, excessive eye contact, and crossed fingers.