Yes! The PEJ spray is safe for oral contact for people who can tolerate lidocaine (so make sure to ask your partner about any allergies!). Just apply the spray and rub it in, wait 10 minutes, then rinse the area and wipe with a damp towel to avoid a medicinal taste.
Never spray this product directly into the eyes or mouth - that could cause some serious medical issues. Check the directions which come with your spray for more information.