2 definitions by Jolly Giant Leprachuan

When a Man or Women cums on their mates back and put the bed sheet on their back. Thus making them, when they get up to chase you, look like Superman.
Danielle got mad a Joey for cumming on her while she slept, while they where running through the house Joey noticed she looked like SUPERMAN with the bed sheet stuck on her back from the cum.
by Jolly Giant Leprachuan March 24, 2010
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1. An erection lasting longer than need. 2. An erection that is noticable and unwanted.
1. Suzy was too tired to continue having anal sex, leaving Jimmy with a Narwhal erection

2. Bobby say Jessie walking home from school one day with VERY short shorts on. He had a Narwhal and tried to cover it with his school books
by Jolly Giant Leprachuan March 18, 2010
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