Dad: Matthew, I'm coming up to your room now, so if there's anything you need to hide...
Son: DAD!!! NO! DON'T COME UP HERE, I'M HAVING SEX!!!
Dad: Well, I'm proud son, finally found a girl!!! Tell her to hide in the closet and I'll be out quick ;)
Son: Fine, I'll tell ERIC to wrap it up...
Dad: ERIC?! Wait, that's a girl name, right? Right Matthew?!
Son: ..Don't expect grandchildren, dad