When your girl is miserable asf, but you get her sucking you off any way.
Abbie was sad yesterday because I discovered she cheated on me again, so she agreed to gimme a good old pout on the spout to calm me down.
When a wizard has problems getting his "wand" ready.
"Sorry hermione I can't enter your gryffindor because I have an erectus defectus."
"Hermione! I want to enter your chamber of secrets but I have an erectus defectus. "