PDA is when couples are like freaking magnets. Public display of affection like kissing and more kissing. Like high school kids who make out in front of everyone and you’re lik awn cute he’s licking her face. First your like ah that’s so cute and bam THEY ARE NOT CONNECT AND VERY VERY TOUCHY
Example : two kids Vil and Elau always make out in front of us in the lockers they are very PDA.
Patent Ductus Arteriosus. When you have a valve above the heart that doesn't close fully, letting blood into he lungs that should not be there. Causes shortness of breath, burning side pain.
Girl: Did you know that I have a PDA?
Boy: Public display of affection?
Girl: No silly, a patent ductus arteriosus.