A lesbian sex act where 3* or more females form a type of chain, also known as a "train", so the middle participants are "eating out" while at the same time getting "eaten out".

(Note that the "caboose" only eats out, while the "locomotive" only gets eaten out. For some trains, the "coupling" may be easiest when the position of each particpant alternates between crawling on all fours and laying on one's back.)

* It should also be noted that the "caboose" does not strictly need to be female.
After a boozy night of drinking together, Tiffany, Chastity, Divinity, Taylor, and Madison decided to eat out in a Restaurant Train. All aboard!
by cyberpimp2 November 10, 2022
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