Rick: . . .aw man, what happened last night. . . oh it's you
Grunkle Stan: how the heck are we waking up in bed together? what is happening?
Rick: you tell me Stan, why  am in bed with you? we must have had some WILD party last night.  
Grunkle Stan: I think we had some wild night, we are based off where  ALex Hirsch and Justin roiland did us singing I've got you babe from a hippie couple last night and we were both so drunk. we got gay together.