Serenade them with a version of happy birthday accompanied on an electric guitar.
Meet them at the door and throw a custard pie in their face!
Compile a short video with the highlights of their life so far and screen it at their party.
Write them a heartfelt letter expressing your appreication for all their good qualities.
Paint them a birthday card, describing their personality with primary blocks of colour.
A burger and fries. That way you can watch MTV at the same time.
Jelly on a plate, squirty cream and that funny shaped carrot from the fridge ought to do it.
You painstakingly recreate the noodles from Tampopo, one of your favourite movies!
You pick up your favourite recipe books and browse for inspiration.
Nouvelle Cuisine looks so fabulous on the plate, who cares what it actually is?
A camper van
A volkswagon beetle with stick on eyes...
A Ford Mustang
A cherry red Chevrolet
A design classic like a mini cooper
Dressing inappropriately for the occasion
Telling a joke and nobody laughs
Not being able to remember the name of someone you have just been introduced to.
Getting answer wrong for a very obvious fact like the capital of France
Talking loudly when everyone else has just stopped