The impression or impersonation of a butterfly dance within a series of movements or musical beats.

That feeling in the pit of your stomach when someone you really really really really like touches you in some way

basically means blushing

From a root form of "flattery" but combined with the context of "flirting" used to describe someone gay being overly friendly with someone straight, but of the opposite sex.

A word describing someone who is not quite a crush, but whom you are still interested in getting to know. I.e. that hot guy you always see in the hall at school, but you don't know his name or what he's like.

British term for placing a bet on something.

a large group of butterflies

The slapping of the male testicles against the woman's pleasure zone during sexual intercourse.
- In other words when you're having sex and the guys balls slap against the woman

A term used to describe the following sequence of events while travelling to another city (usually, but not always in another country)

1) Engaging in conversation with a stranger (often on tinder)
2) Convincing that person to invite you back to their house to exchange sexual favours
3) Exchanging sexual favours with said person
4) Sleeping at that person's house overnight to avoid paying for accommodations in the foreign city
5) Indefinitely borrowing an item from said person's house as a souvenir of the trip

Fluttering should not be confused with parachuting which only goes through items "1-4".
It should also not be confused with "Brad Walling" which goes through item "1-4" but replaces item 5) with "making said person breakfast using whatever food you can find in their house (this allows you to seem like a nice person but provides you with a free breakfast, therefore reducing travel costs)"

The term originated in Saskatchewan but has gained favour throughout Canada.