The act of putting boogers on other people.

A person who sits next to you in a public bathroom stall to take a shit, when there are options to sit one stall away. So if there are three stalls and you are sitting in stall 1 ...the grinch would sit in stall 2, EVEN if stall 3 is open and clean.

The act of being robbed just days before Christmas, just like the Grinch who stole Christmas.

When one's heart grows multiple sizes, bursting through actual and metaphorical barriers and eliminating past grumpiness.

When you are taken advantage of by the scammers who put up a fake offer for a freebie that never comes, while your spam and junk mail increases from the spam and mailing lists the scammers sold your information to.

When a person who is unattractive inconcievably ends up dating someone who is significantly hotter, thereby unfairly removing him or her as a dating option.

a weird sounding but fake sexual act, that a boy may brag about doing to a girl, when really he fell asleep