Can often help you spot someone that is either lying about getting some, or just lying about knowing 'adult stuff'
Bob "Wow, get in, though I'm guessing it wasn't your spelling that attracted her?"
Boy 1 "Mate, I was riding the wife like a champ last night!"
Boy 2 "OMG like me to! you shoulda seen the totally rad pune I was getting"
Boy 3 "Sure you did... How old are you, like 12?"