A yellow pill or roll that is often sold in the rave/club scene. They are sold as e, but often contain an analogue of LSD or piperazine so that they're made cheaply. If someone tells you they're selling yellow seagulls, you're probably in for a hell of a night.

If it's a compressed pill, chances are it's not MDMA.
"What was in the yellow seagull you sold me?"
"MDMA"
"No way, I'm tripping balls!"
by sillyseagull January 16, 2012
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