Originally Posted by AllahForgiveMe
Just tell the truth and seek forgiveness from Allah. Whenever you do something wrong, follow it with a good deed.
Secondly, no one really has the gift of interpreting dreams, so you and your family should avoid doing that. If you have a good dream, then feel free to share it, but if it's bad, better to keep to to yourself.
Dreams are of three types: rahmaani (those that come from Allaah), nafsaani (psychological, they come from within a person) and shaytaani (those that come from the Shaytaan). The Prophet (peace and blessings of Allaah be upon him) said: “Dreams are of three types: a dream from Allaah, a dream which causes distress and which comes from the Shaytaan, and a dream which comes from what a person thinks about when he is awake, and he sees it when he is asleep.” (al-Bukhaari, 6499; Muslim, 4200)
You can read more about dreams here.
Thirdly, don't EVER refrain from asking and seeking Allah's forgiveness even if you feel ashamed to do so. Lying is sinful in most circumstances and the worst lie you can do is the ones against Allah and the prophet, so I wouldn't say the lie you told is to that degree especially when it was intended to be a silly joke. Just refrain from lying in general, tell the truth, and seek forgiveness from Allah. :)