The Ash Wednesday

As the girl assumes the doggy position, lubricate thumb orally, and insert thumb analy into female. Place soiled thumb on forehead and proceed to make the sign of the cross.

In the Liturgical year, the first day of Lent. The Jewish and Christian scriptures mention prayer and repentence while fasting and being covered in ash and sackcloth; so, the Catholics started marking the beginning of Lent by putting ash on their foreheads. It's a tradition that extends back about 1,000 years. The ashes are made from the burnt palm branches used on Palm Sunday of the previous year.
Although it's not a holiday of obligation, Catholics flock to mass on Ash Wednesday to get their ashes and begin lent. Although many prayers are now used when the ashes are being administered, the old-time prayer everyone knows is:

Remember Man that you are Dust
And unto Dust you shall return.

When he cums on his hand and then uses it to make a sign of the cross on your forehead, similar to the catholic tradition of getting ashes on your forehead on Ash Wednesday.

The day 40 days before Good Friday in the Catholic/Christian Calendar. Marks the beginning of Lent.

Actually a miss pronunciation of "Hash Wednesday", a day of the week following Mescaline Monday and Trippin' Tuesday and preceeding THC Thursday and Freebase Friday.

is the day Lent begins. It occurs forty days before Good Friday.

Fourty days before Easter and the beginning of Lent when all the Catholics walk around with smudges on their foreheads and begin a fast from some vice or food or luxury and go around complaining to their friends about how great a sacrifice they are making when they are asked about the black smudge on their forehead.

It is supposed to be for the purpose of remembering Christ's sacrifice on the cross. So that everytime you crave the thing you are giving up you will remember the crucifixion and be thankfull or do something good for people.