(n.v.) An Australian sexual practice similar to a regular felch, but instead of eating semen out of a body cavity, involves sucking out beer that has been sprayed into vaginal vault or rectum (usually facilitated by vigorous agitation of beverage can/bottle).
That Cheryl was a wild sheila, I Fosters felched a slab of beer from her butt hole last night!
What the yanks reckon Aussies drink, also what they think we call beer. We have a totally different word for that though.. We call it... wait for it... "beer".
Fosters sucks, you'll be hard stretched finding a fosters in any real watering hole.
If you want fosters in Australia, go to some yuppieterrorist(tourist) bar in a CBD.