The expression 'come on in' is friendlier and more welcoming

The podcast discusses the expression 'come on in' and compares it to 'come in'. While both expressions essentially mean the same thing, 'come on in' is considered a little bit friendlier and more welcoming. The host explains that 'come on in' is often used in situations where the person is being more relaxed and friendly, conveying a sense of encouragement and equal level. The podcast suggests that using 'come on in' can make guests feel more at ease and comfortable.