「電燈膽」

(pos:名詞)(sim:燈膽)
<explanation>
yue:用#電力 做能源，發出光線#照明 嘅裝置，外形通常都會做到近似球體（量詞：個／盞）
eng:light bulb
<eg>
yue:我唔夠高換電燈膽，有冇人可以幫下我？ (ngo5 m4 gau3 gou1 wun6 din6 dang1 daam2, jau5 mou5 jan4 ho2 ji5 bong1 haa5 ngo5?)
eng:Can anyone help me change the light bulb? I'm not tall enough.
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<explanation>
yue:夾喺情侶中間、唔識迴避、阻住對情侶談情説愛嘅人（量詞：個）（語源：由於以前電燈膽嘅玻璃入面係真空嘅，所以「電燈膽」有句歇後語「#唔通氣」；而家淨係用前半句去表達「唔通氣嘅人」）
eng:an unwanted third person who accompanies a pair of lovers; the third wheel
<eg>
yue:佢哋兩個咁煙韌，我都唔好意思做電燈膽嘞。 (keoi5 dei6 loeng5 go3 gam3 jin1 ngan6, ngo5 dou1 m4 hou2 ji3 si1 zou6 din6 dang1 daam2 laak3.)
eng:The two of them are so intimate with each other, it doesn't feel right for me to be the third wheel.