Saying "awkard" is often a remark deliberately aimed at stating the obvious to make the situation just that little bit more cringe-worthy.
for related topic please see ground swallow me up, dig a hole and keep digging
Paul: er...(awkard silence) sorry sir he's new here.
Paul: (whispering) dude the guy is blind and that's his guide dog!
3rd Party: awkward
2. Clumsily or unskillfully performed.
3. Marked by or causing embarrassment or discomfort.
Teens 2, 3, and 4: ...okay...
Teen 5: ..aaaaawkwardddd...
Remember kids, lack of conversation isn't awkward until you actually say it is.