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The presence of a parent or an adult within earshot of a conversation that a teen is having with another teen with a topic they don't want the adults to know about.
while talking on the telephone:
Teen1:"So how was your date with the new hottie from school?"
Teen2:"Uhm...will tell you about it tomorrow..."
Teen1:"Oh! So there's parental guidance there now eh?"
by back2kcab May 09, 2009
The act of two lovers having sex on their parent's bed.
"we safe sex under parental guidance"
by Maithrui October 06, 2004