to grab attention more slightly or to ilicit a response. It is also used as a question mark a little after a question is asked.
2.Ay check this fool out
some real hard core Canadians will even use it in the place of can you repeat that, holding the word ay a little longer in a guestioning tone ie: aayyy?
party -> partay
sorry -> sorray
booty -> bootay
This effect is used for either one or both of the following purposes:
1) To sound "different". The extra delay of the additional "a" may be used to emphasize that word in a particular sentence. e.g. well SORRAAYYY, which puts emphasis on the word "sorry".
2) To sound ghetto. Certain phrases like "off the hizzay" are derived from slang terms associated with ghetto indivdiuals e.g. gangsters, thugs or their wannabe equivalents.
A (with -ay suffix): I'm going to cancun to get me some bootay!