Yawn which wipes out anyone within hearing distance, has tendency to leave residual effects, such as prolonged yawning for those in hearing range, as well as secondary yawns by those not in hearing radius of original yawn. Example: The party was going great, but then Bill dropped a yawtonic bomb and everyone got tired and went home.
YAWTONIC BOMB
Meaning of YAWTONIC BOMB in English
Slang English vocab. Английский сленговый словарь. 2012