REQUEST: Looking For Two Songs

['Illicit']

yall seen Cheech N Chong the movie, I wanna know the name of the song he sarts singin when the cop stops em and he knocks on the window but dude's so stoned he makes fun of him singin "jus keep on knockin but ya cant come in"
I bet there's an actual song to it, maybe an oldie I dont know,
and second: on the Wu-Tang killa bee's album, on this one track there's this little sample comin in soundin like: "laughter, laughter....laughter"  something like that, its being sung by a female voice and seems to be an oldie as well, if yall know what I'm talkin bout and know the answer, I'd apreciate it very much. hope this was the right spot to post this in

peace